The latter half, including the ending, sands away most of the episode's cutting edges.
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It was all right on the cutting edges of everything that was going on.
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Two hand-held grinders were left out on a patio with their cutting edges exposed.
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Up now is "Cutting Edges," a group show of abstract painting drawn from a private Norwegian collection.
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Cutting sandpaper creates an inside bevel, a back bevel, that moves the cutting edges apart, destroying the tool.
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According to a press release about the discovery, the ax was created by a skilled craftsperson who worked to chip its cutting edges with a hammerstone.
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Creating an Acheulean axe by repeatedly knocking flakes off of a raw stone in order to create two sharp cutting edges requires a significant amount of planning.
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Most shell mills made today use indexable inserts for the cutting edges—thus shank, body, and cutting edges are all modular components.
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Each weighs about 4,000 tons. The caissons were fitted with steel "cutting edges" to help them sink. The steel used in the cutting edges weighed 238 tons. Construction of the first caisson started in 1947 after the "wet season".
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Reamers should not be reversed in use as this will tend to dull the cutting edges.
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Centralized teeth have very blunt cutting edges, with enamel between that has varying thickness while remaining shallow.
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P2–M2 have two widely separated roots, accessory denticles on the anterior and posterior cutting edges, and anastomosing striae on the enamel. P1 is caniniform with a single root. P2–4 have laterally compressed crowns and accessory denticles on the anterior and posterior cutting edges. P4 is the largest lower tooth.
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Rough cutting edges—such as serrated knives—abrade and damage a cutting surface more rapidly than do smooth cutting implements.
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They usually have 2 parallel angled cutting edges, and long, low sidepieces. Manufacturers include Dura- Grader, Road Boss, and RoadRunner.
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Kronosaurus teeth exceed in length (the largest up to long with crowns). However, they lack carinae (cutting edges) and the distinct trihedral (three facets) of Pliosaurus and Liopleurodon teeth. The combination of large size, conical shape and lack of cutting edges allows for easy identification of Kronosaurus teeth in Cretaceous formations from Australia.Massare JA. 1997.
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Additionally, it is illegal to carry a fixed-blade knife with multiple cutting edges. However such a knife may be kept at home for collector purposes.
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The maxilla is cleaver-shaped with a large postorbital blade. Two to three rows of conical teeth are present. The teeth normally show cutting edges. The preopercle is boomerang-shaped.
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Katana tend to have much more niku than wakizashi. If it is required to measure the angles of cutting edges, it is achieved by using a goniometer, or blade edge protractor.
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Their outer side is convex. Sharp cutting-edges or carinae are lacking. Their apices are sharp and slightly bent inwards. They possess a cingulum, a thickened ridge at the crown base.
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A typical reamer consists of a set of parallel straight or helical cutting edges along the length of a cylindrical body. Each cutting edge is ground at a slight angle and with a slight undercut below the cutting edge. Reamers must combine both hardness in the cutting edges, for long life, and toughness, so that the tool does not fail under the normal forces of use. They should only be used to remove small amounts of material.
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In addition to being suitable cutting soft copper and aluminum, pliers may be specifically designed for cutting hardened wire, such as piano wire or nails, by induction hardening of the cutting edges.
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There were 70 thin and bifacially worked blades, which had no cutting edges nor notches and stems. Choppers were heavier, cruder, and bifacially flaked with cutting edges.Aikens 1970, p. 57-58, 60.
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The teeth were moderately heterodont, i.e., tooth shape varied within the jaw, and sat slightly obliquely in the jaw, slightly overlapping each other. Their cutting edges were with up to 20 per tooth.
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A detail of the crosscut teeth of a dozuki saw. A Ryoba with two cutting edges ; : A type of backsaw. The Japanese means "attached trunk", thus a saw with a stiffening strip attached, i.e., a backsaw.
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Gracey curettes have sharp cutting edges on only one side of their blades. There are two site-specific Gracey curettes -- posterior mesial (white ring) and posterior distal (blue ring), in addition to the anterior curette (red ring).
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This is a very common and relatively successful construction method. A Forstner bit could bore the mounting hole for the hinge, but particle board and MDF are very abrasive materials, and steel cutting edges soon wear. A tungsten carbide cutter is needed, but the complex shape of a forstner bit is difficult to manufacture in carbide, so this special drill bit with a simpler shape is commonly used. It has cutting edges of tungsten carbide brazed to a steel body; a center spur keeps the bit from wandering.
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The number in the lower jaw is unknown. Except for the first rather straight pair, the teeth were recurved, sharply pointed, covered with smooth enamel and circular in cross-section but equipped with two keels providing cutting edges.
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Universal curettes have sharp cutting edges on both sides of their blades. Therefore, only two instruments are necessary -- anterior (pink ring) and posterior (purple ring).Gehrig JS, Sroda R, Saccuzzo D. Fundamentals of Periodontal Instrumentation and Advanced Root Instrumentation. 8th ed.
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Although its teeth also bear cutting edges without serrations, they are more bulbous, not as strongly compressed laterally and not curved distally. A new genus wasn't erected for MCZ 2987, as it is very fragmentary and lacks sufficient diagnostic features.
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These long strands tend to pull out of the wood hole, rather than being cleanly cut at the hole edge. The lip and spur drill bit has the outside corner of the cutting edges leading, so that it cuts the periphery of the hole before the inner parts of the cutting edges plane off the base of the hole. By cutting the periphery first, the lip maximizes the chance that the fibers can be cut cleanly, rather than having them pull messily out of the timber. Lip and spur drill bits are also effective in soft plastic.
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True ambidextrous scissors are possible if the blades are double-edged and one handle is swung all the way around (to almost 360 degrees) so that the back of the blades become the new cutting edges. has been awarded for true ambidextrous scissors.
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Sawtooth bits are also available, which include many more cutting edges to the cylinder. These cut faster, but produce a more ragged hole. They have advantages over Forstner bits when boring into end grain. Bits are commonly available in sizes from diameter.
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Western Australia, 1927 As well as coarse grinding, sharpeners also typically 'dress' the cutting edges with a sharpening stone or honing steel, secure or replace loose handles and generally offer advice and assistance regarding best practice. Some also sell knives and related products.
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Ten Speed Press. 1998 and the English Record No. 405 Multi-Plane with a wide variety of interchangeable cutters, integral fences, and "nickers", small cutting edges which score the grain fibers when working across the board.C. W. Hampton and E. Clifford:"Planecraft". Page 151.
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Himalayasaurus is an extinct genus of ichthyosaur from the Late Triassic of Tibet. The type species Himalayasaurus tibetensis was described in 1972 on the basis of fragmentary remains, including teeth, limb bones, and vertebrae. The entire body length of Himalayasaurus is estimated to have been over in length. Himalayasaurus has since been considered a nomen dubium or "dubious name" because of the lack of features that set it apart from other ichthyosaurs, although the presence of distinct cutting edges on its teeth have more recently been proposed as a unique feature of the genus (cutting edges have also been found in the recently described ichthyosaur Thalattoarchon from the western United States).
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The teeth are supported from behind by tall, triangular, unfused interdental plates. The cutting edges bear eighteen to twenty denticula per centimetre. The tooth formula is probably 4, 13–14/13–14. The jugal bone is pneumatised, pierced by a large foramen from the direction of the antorbital fenestra.
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Forstner bits have radial cutting edges to plane off the material at the bottom of the hole. The bit in the image has two radial edges. Other designs may have more. Forstner bits have no mechanism to clear chips from the hole, and therefore must be pulled out periodically.
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A face mill is a cutter designed for facing as opposed to e.g., creating a pocket (end mills). The cutting edges of face mills are always located along its sides. As such it must always cut in a horizontal direction at a given depth coming from outside the stock.
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Radiolarite is a very hard rock and therefore was extensively used by stone-age man for tools and weapons. Radiolarite has therefore been called the "iron of the Paleolithic". Axes, blades, drills and scrapers were manufactured from it. The cutting edges of these tools, however, are somewhat less sharp than flint.
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They have cutting edges on the crests. However, australopiths generally evolved a larger postcanine dentition with thicker enamel. Australopiths in general had thick enamel, like Homo, while other great apes have markedly thinner enamel. Robust australopiths wore their molar surfaces down flat, unlike the more gracile species, who kept their crests.
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Another invention aims to protect the rotor by equipping the control rods with cutting edges. The system is effective when the helicopter strikes the wires at angle of less than 90 degrees and at speeds more than . The system is designed to cut a steel cable with a breaking strength of .
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It is generally seen that cutting edges are thinner for cutting soft materials and thicker for harder materials. This progression is seen from kitchen knife, to cleaver, to axe, and is a balance between the easy cutting action of a thin blade vs strength and edge durability of a thicker blade.
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Better chip resistance along the cutting edges offered the longer tool life shops need to reduce overall tool costs. IMCO distinguished between the POW-R- FEED lines, recommending the M924 for higher-volume operations and the original M904 for shop environments where short runs and a variety of materials are common.
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M1–3 have accessory denticles on the posterior cutting edges. P2–3 are two-rooted. Outside the upper one-rooted teeth and inside the upper two-rooted teeth there are pits for reception of the lower teeth. Zygorhiza (and Dorudon) replaced their upper and lower deciduous first premolars with permanent teeth.
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The first three pairs of walking legs end in claws. The first pair of claws is symmetrical, and ends in long fingers covered with sharp spines on cutting edges, but without hairs. The second pair of walking legs is much longer than the third pair. Both species reach a length of .
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Glaucosaurus is plainly not a therapsid, e.g. because the lacrimal reaches the naris, the septomaxilla is large, there are no incisors, etc. And it is just as plainly not a carnivore, since it lacks cutting edges on the teeth or canine-like teeth. So, it is very likely to be an edaphosaur.
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2011 - IMCO introduces second generation of enDURO M525 end mill line for machining in stainless steels and titanium. 2012 - IMCO launches the POW-R-FEED M924, a second-generation version of the original with the new AlCrNX coating and reinforced cutting edges that remove several times the metal per tool as the original M904.
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The stone tools are made of siliceous limestone, while the hammer stones and scrapers are made of vein quartz. Among the features of the tools, heavy flakes and cores were produced by a hurling technique, followed by a few direct percussions to form the cutting edges, with little to no secondary retouches in most cases.
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Surgical scissors are surgical instruments usually used for cutting. They include bandage scissors, dissecting scissors, iris scissors, operating scissors, stitch scissors, tenotomy scissors, Metzenbaum scissors, plastic surgery scissors, and Mayo scissors. Surgical scissors are usually made of very hard material stainless steel for ongoing toughness. Some scissors have tungsten carbide reinforcements along their cutting edges.
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The cutting edges of the maxilla and mandible are serrated which aids in securing live prey and fruit. These serrations, along with the decurved tip of the bill, are also useful in cutting food items into smaller pieces., Fowler, Murray.E. and R.Eric Miller (2008) "Zoo and wild animal medicine: current therapy", Elsevier Health Sciences, Vol.6.
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The jaw plates are thin, delicate horn-color with a broad band of very dark brown along the strongly serrate, cutting edges. The inner surface is strongly reticulated, as in species of Velutina. The form of these plates is quite irregular. The cutting edge is oblique, forming an angle of about 135° with the inner or middle, straight edge.
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Nevertheless, technologies have been developed that produce deep holes with impressive accuracy. In most cases they involve multiple cutting points, diametrically opposed, whose deflection forces cancel each other out. They also usually involve delivery of cutting fluid pumped under pressure through the tool to orifices near the cutting edges. Gun drilling and cannon boring are classic examples.
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North of the dolomite zone, there is a wide band of Kieselkalk chalk. In the chalk region can be found the Antonshöhe, where radiolarit for flint cutting edges was mined in the Late Stone Age. North of the Kaltenleutgebner Straße along the edge of the valley can be found quarries delivering chalk, mergel, sandstone etc. for the building industry.
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C. m. madagarensis has a vivid pale or cold blue beak, with a dark tip and cutting edges in adult males, and a dark brown with similar pattern in adult female. Juveniles have a black bill with pale pink base. The iris is sky-blue or greenish blue in males, and brown in females and juveniles.
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The permanent dental formula for Zygorhiza is , the deciduous dental formula is . The cingula at the base of the tooth crowns on P2–4 are strongly developed but do not meet on the medial side. P2, the largest upper tooth, has four accessory denticles on the anterior and posterior cutting edges. P3–M2 form a closed series.
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The mandibles in these resin gathering bees are characteristically lacking cutting edges found in the closely related leafcutters. The males are smaller than the females. The body segments are covered in various aspects with fine short hair called pubescence. The hairs are of varying length, texture, and color on different aspects of the male and female bees.
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Some inserts are even made so that they can be flipped over, giving as many as 16 cutting edges per insert. There are many types of inserts: some for roughing, some for finishing. Others are made for specialized jobs like cutting threads or grooves. The industry employs standardized nomenclature to describe inserts by shape, material, coating material, and size.
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The describing authors indicated five distinguishing traits. They were autapomorphies, unique derived characters, in which Albadraco differs from all other known Azhdarchidae. The cutting edges and sides of the beak show a high foramina density. The premaxilla has split- like foramina on the lower and side surfaces but also two rows of foramina on the side.
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Zirconium tungstate has the unusual property of shrinking in all dimensions when heated, whereas most other substances expand when heated. Zirconyl chloride is a rare water-soluble zirconium complex with the relatively complicated formula [Zr4(OH)12(H2O)16]Cl8. Zirconium carbide and zirconium nitride are refractory solids. The carbide is used for drilling tools and cutting edges.
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Fossil teeth of C. biauriculata from Khouribga (Morocco) Cretalamna teeth are distinguished by a broad triangular cusp and two lateral cusplets. The cutting edges of the teeth are razor-like, while the sides have a smooth surface. Teeth symmetry is variable; some have exact bilateral symmetry whereas others have high asymmetry. Adjacent teeth do not overlap.
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One example from a 10th-century grave in Nemilany, Moravia, has a pattern welded core with welded-on hardened cutting edges. Another example appears to have been made from high-quality hypoeutectoid steel possibly imported from Central Asia.David Edge, Alan Williams: Some early medieval swords in the Wallace Collection and elsewhere, Gladius XXIII, 2003, 191-210 (p. 203).
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Diagonal pliers with uninsulated handles. Diagonal pliers (or wire cutters or diagonal cutting pliers or diagonal cutters or side cutting pliers) are pliers intended for the cutting of wire (they are generally not used to grab or turn anything). The plane defined by the cutting edges of the jaws intersects the joint rivet at an angle or "on a diagonal", hence the name.
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The Wiley mill is most commonly used in agriculture and soil science laboratories but can be used on a wide variety of materials. The Wiley mill was originally designed for grinding fertilizer materials, animal hair, hoofs and other materials. The hard, tool steel cutting edges on the knives which allows for milling of a wide range of materials, including plastics.
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In 1926, Krupp, a German company, developed carbide, a very hard mixture of sintered carbides of various heavy metals, especially tungsten carbide, used for cutting edges and dies. This new material revolutionized metal-removal or “chip-cutting” in manufacturing. In the 1950s, carbide was used in all machining processes except for sawing. In 1942, German scientists further developed carbide into cermet.
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The maxillipeds all have well developed exopods with a multi-articulated flagellum. The fingers are long and slender, being about twice as long as the palm, their cutting edges being unarmed. The carpus is practically twice as long as the chela and slightly longer than the merus. The second legs are equal, they reach with the carpus beyond the antennular peduncle.
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Reconstructed lower dentition of the C. ricki holotype. Cardabiodon possessed the basic dental characteristics for a mackerel shark. Its dental structure was heterodontic, meaning that there were many tooth morphologies present. Diagnostic features of Cardabiodon teeth include strongly bilabial roots, robust crowns that is either near-symmetrically erect or distally curved, visible and large tooth necks (bourlette), nonserrated cutting edges, and lateral cusplets.
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The sawtooth serrations on a common merganser's bill help it to hold tight to its fish prey. The tomia (singular tomium) are the cutting edges of the two mandibles.Campbell and Lack (1985), p. 598. In most birds, these range from rounded to slightly sharp, but some species have evolved structural modifications that allow them to handle their typical food sources better.
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The front of the premaxilla expands to the side, forming a bulbous structure similar to that of many phytosaurs. It possessed eight teeth, with the first four being much larger than the last four. Premaxillary teeth were conical and ornamented by longitudinal ridges, but lacked serrations or cutting edges. The tooth row was slightly downturned at an angle of 15-20 degrees.
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The use of automatic changers increases the productive time and reduces the unproductive time to a large extent. It provides the storage of the tools which are returned automatically to the machine tool after carrying out the required operations, increases the flexibility of the machine tool, makes it easier to change heavy and large tools, and permits the automatic renewal of cutting edges. .
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Lower fins are often yellow, and may be a bright golden shade. The oblique mouth is terminal, and lacks horny cutting edges. The fins are rather small and rounded, with the pelvic fins being especially notable for their paddle shape. The variations on the basic cyprinid plan seem to be characteristic of desert fishes evolving in isolation, with the body adapting for midwater swimming in quiet water.
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The Late Triassic ichthyosaur Himalayasaurus tibetensis also has large teeth with cutting edges, but can be distinguished from Thalattoarchon saurophagis by the presence of grooves across the surfaces of its tooth crowns. Thalattoarchon is very similar in appearance to Cymbospondylus, another large-bodied Middle Triassic ichthyosaur, but differs in having a head that is about twice as large as that of Cymbospondylus relative to its body.
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Jupiter 1 with rotary disk cutters Some older models like the 1897 German Jupiter 1 used reversible rotary cutter-disks with cutting edges radiating from the center on each side. These were high-end models, quite large and expensive. Others simply used abrasives like sandpaper. In some cases an abrasive was used to shape the graphite core, while the wood was cut some other way.
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This shark is known from its fossilized teeth and vertebral centra. Like other elasmobranchs, the skeleton of Otodus was composed of cartilage and not bone, resulting in relatively few preserved skeletal structures appearing within the fossil record. The teeth of this shark are large with triangular crown, smooth cutting edges, and visible cusps on the roots. Some Otodus teeth also show signs of evolving serrations.
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Floats have parallel teeth and they can be resharpened as many times as the thickness of the blade will allow. Edge floats resemble saw blades and are generally used to cut wedge slots in wood. Flat sided floats are more similar to a file or rasp but their cutting edges are a series of parallel teeth. Types of woodworking floats include: joiner's float, bed float, side float .
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New Generation Tool Holders and especially the Hydraulic Expansion Tool Holders minimise the undesirable effects of vibration to a large extent. First of all, the precise control of total indicator reading to less than 3 micrometres helps reduce vibrations due to balanced load on cutting edges and the little vibration created thereon is absorbed largely by the oil inside the chambers of the Hydraulic Expansion Tool Holder.
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Because obsidian is not natural to Belize, the site of excavation, the obsidian cores were the product of transactions between the Mayans and those in present-day Honduras, Mexico and Guatemala. Obsidian blades are the sharpest natural cutting edges known, and after the lithic reduction already fractured blades, the triangular heads were produced. These obsidian blades were used as the Mayans' primary cutting utensil.
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Parashurama was known to have terrible temper having lost his father to the evil Kshatriya Kartavirya Arjuna (not to be confused with Arjuna of Mahabharata). Parashurama's weapon had supernatural powers. It had four cutting edges, one on each end of the blade head and one on each end of the shaft. The parashu was known as the most lethal close combat weapons of the epics.
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Pincers are primarily used for removing objects (typically nails) out of a material that they have been previously applied to. Carpenter's pincers are particularly suited to these tasks. If the pincers have perpendicular cutting edges, the pincers are often called end-nippers or end-cutters. Pincers, often red-hot, have also been used as an instrument of torture since ancient Roman times or earlier.
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This prevents the cut material from crowding and breaking the tap. :The most common type of power driven tap is the "spiral point" plug tap, also referred to as a "gun" tap, whose cutting edges are angularly displaced relative to the tap centerline.A spiral point plug tap ("gun" tap). This feature causes the tap to continuously break the chip and eject it forward into the hole, preventing crowding.
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St. Louis: Saunders/Elsevier; 2015. The periodontal curette is considered a treatment instrument and is classified into two main categories: universal curettes and Gracey curettes. Periodontal curettes have one face, one or two cutting edges and a rounded back and rounded toe. They are typically the instrument of choice for subgingival calculus removal. Universal and Gracey curettes are typically used during nonsurgical periodontal therapy of a patient’s dental hygiene care.
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The tooth sockets are rectangular in upper view. The jaw carries at least ten teeth. These are relatively slender, but the front teeth have a D-shaped cross section with the convexity facing outward; the rear teeth are dagger-shaped and more flattened. The cutting edges are convex and show up to thirteen denticles per five millimetres at the crown base, and up to eight denticles near the apex.
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As the name implies, Eusthenodon has large tusks that protrude from the upper and lower jaws of the skull. Specifically, along the midline of the snout, two large and stout teeth emerge on the premaxilla. From the incomplete material collected upon the discovery of Eusthenodon, the largest tusks are estimated to have been at least 50 millimeters in length. These two teeth are anteroposteriorly flattened and have distinctive, sharp cutting edges.
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Southern yellow-billed hornbill use their beaks as a pair of forceps. They will grasp their food between the tips and then toss it back in their throat where the short, stubby tongue will assist in swallowing the food. The inner cutting edges of the beak are serrated to facilitate the crushing and fragmentation of food. Most of the food is picked from the ground or from low vegetation.
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Polycrystalline diamond tools are used extensively in automotive and aerospace industries. They are ideal for speed machining (9000 surface feet per minute or higher) in tough and abrasive aluminum alloys, and high-abrasion processes such as carbon-fiber drilling and ceramics. The diamond cutting edges make them last for extended periods before replacement is needed. High volume processes, tight tolerances, and highly abrasive processes are ideal for diamond tooling.
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It can often be difficult to avoid chatter (also known as machining vibrations) when cutting with countersink cutters. As usual in machining, the shorter and more rigid the setup, the better. Better-quality fluted countersink cutters sometimes have the flutes (or at least one flute) at an irregular pitching. This variation in pitching reduces the chance of the cutting edges setting up a harmonic action and leaving an undulated surface.
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This surface ripple is also dependent on the surface speed of the cutting edges, material type, and applied pressure (or feed rate); once started it is hard to remove. Too light a feed tends to increase chatter risk. As in many other machining operations, an appropriate response to the chatter may be to decrease speed and increase feed. On a drill press, the slowest available spindle speed is usually best.
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Unlike honeybees, they do not have pollen baskets on their hind legs. Most bees in the genus are small to medium in size, although M. pluto at 38 mm is regarded as the largest bee in the world. Many bees in the genus are referred to as leafcutters. However, the mandibles of M. campanulae lack cutting edges; it belongs to the subgenus Chelostomoides, which use mud or resins to build.
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Front of insect head diagram The mandibles have 4 tooth-like (dentate) ridges, which lack cutting edges. The compound eyes are nearly vertically aligned, but converge slightly towards front of the face or apex. The lateral ocelli are located closer to the compound eyes than to the vertex margin. One each side of the midline, there are distinct ridges (tubercles) located along the margin of the lower facial plate (clypeus).
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Two Khukuris point upwards, the hands crossed in saltire, the cutting edges of the blades inwards, between the blades the figure of Mercury on a globe, the latter supported above by a scroll bearing the motto 'Certa Cito' and below by nine laurel leaves, the whole surmounted by Saint Edward's Crown. The regiment were also given permission to adopt the Red Grant tartan and thus began affiliation with the Scottish Regiment.
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The removal of the material is done by using geometrically undefined cutting edges (grain bound) that are held together in large working wheels with a thin layer of abrasive. The workpieces are held in toothed carriers (plastic, steel) that are driven by two horizontal pin rings. The full workpiece surface is in constant contact with an abrasive wheel. There are two different processes: Single and double sided machining.
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The higher back of the lower jaw seems to show a much larger opening, but this is an artefact caused by the original inexpert preparation damaging the thin bone surface of an extensive mandibular fossa. A real and much smaller external mandibular fenestra is present in front of this. Neither the lower jaw nor the upper jaw form cutting edges. The cervical vertebrae are elongated with low spines.
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A cylinder with cutting edges, or knives, and a knife bed is part of the loop. The spinning cylinder pushes the contents of the trough around repeatedly. As it lowers slowly over a period of hours, it breaks the rags up into fibres, and cuts the fibres to the desired length. The cutting process terminates when the mix has passed the cylinder enough times at the programmed final clearance of the knives and bed.
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Jacob Morath's design for an auger driven agricultural machine, 1899. One of the earliest examples of a screw-propelled vehicle was designed by Jacob Morath, a native of Switzerland who settled in St. Louis, Missouri in the United States in 1868. Morath's machine was designed for agricultural work such as hauling a plough. The augers were designed with cutting edges so that they would break up roots in the ground as the machine moved.
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Although iron is quite abundant, good quality steel remained rare and expensive until the industrial developments of Bessemer process et al. in the 1850s. Close examination of blacksmith-made antique tools clearly shows where small pieces of steel were forge-welded into iron to provide the hardened steel cutting edges of tools (notably in axes, adzes, chisels, etc.). The re-use of quality steel is another reason for the lack of artifacts.
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Blows from the replica macuahuitl were most effective when it was swung and then dragged backwards upon impact, creating a sawing motion. This led Max Geiger, the computer programmer of the series, to refer to the weapon as "the obsidian chainsaw". This may have been due to the crudely made obsidian cutting edges of the weapon used in the show, compared with more finely made prismatic obsidian blades, as in the Madrid specimen.
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The U.S. Marine Raider stiletto was similar to the Fairbairn-Sykes Fighting Knife. Both were designed hilt heavy, to lie in the hand, to prevent dropping the stiletto. Both had a tapered, double-edge blade with stiletto sharp tip and diamond-shaped cross section, sharpened on both cutting edges all the way to the oval crossguard. They both had a slender symmetrical grip of "Coca-Cola bottle" shape and both weighed the same .
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The detail of the sickle's being flint rather than bronze or even iron was retained by Greek mythographers (though neglected by Roman ones). Knapped flints as cutting edges were set in wooden or bone sickles in the late Neolithic, before the onset of the Bronze Age. Such sickles may have survived latest in ritual contexts where metal was taboo, but the detail, which was retained by classical Greeks, suggests the antiquity of the mytheme.
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Roughing end mills quickly remove large amounts of material. This kind of end mill utilizes a wavy tooth form cut on the periphery. These wavy teeth act as many successive cutting edges producing many small chips. This results in a relatively rough surface finish, but the swarf takes the form of short thin sections and is more manageable than a thicker more ribbon-like section, resulting in smaller chips that are easier to clear.
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A reviewer for Gramophone was generally positive about the album, praising Wilson's voice and her interpretations of the standards included. However, they said that compared to the originals, Wilson's versions may not be as powerful. They noted that with this album, Wilson appears to move away "from jazz heartlands or cutting edges and towards the embrace of 'pop cult' status." The reviewer particularly enjoyed "Skylark" (calling it "sublime") and "Last Train to Clarksville" ("a delight").
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Its shape is similar to a large sickle and can be effectively used to reach around an opponent's shield and stab them in vital areas, such as the kidneys or lungs. It closely resembles the Afar Gile. The Gile has two cutting edges, while the shotel's upper edge is unsharpened and sometimes used braced against the swordsman's shield for strength. The Shotel and other Eritrean and northern Ethiopian swords are occasionally referred collectively in Geez as Han'e.
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The universal curette is double-ended with paired mirror- image working ends. The working end has a rounded back and a rounded toe with a semicircular cross section. This design allows the instrument to be used both below and above the gingival margin. The face of the instrument is at a 90-degree angle to the lower shank and contains two cutting edges on either side of the working end that are level with one another.
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The cylindrical cutter around the perimeter shears the wood fibers at the edge of the bore, and also helps guide the bit into the material more precisely. Forstner bits have radial cutting edges to plane off the material at the bottom of the hole. The bits shown in the images have two radial edges; other designs may have more. Forstner bits have no mechanism to clear chips from the hole, and therefore must be pulled out periodically.
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These bits are available both in a version similar to an auger bit or brace bit, designed for low speed, high torque use with a brace or other hand drill (pictured to the right), or as a high speed, low torque bit meant for a power drill. While the shape of the cutting edges is different, and one uses screw threads and the other a twist bit for the pilot, the method of adjusting them remains the same.
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The small, black, three stemmata (simple eyes) sit just behind the antennae at either end of the head capsule, wide apart from each other at approximately 10 times the width of the eye apart. The inner cutting edges of mandibles are entire, unserrated and slightly sickle shaped, the apex very acute. The mandibles have a partially membranous lobe on the molar part. They are much less wide than that of the adult, and appear to be more highly sclerotised.
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The tail of the juvenile is usually shorter, while the mandible is yellowish, and the maxilla have whitish cutting edges. The bird is similar to the slaty-backed forktail, but lacks the slaty back of the latter, and is also smaller in size. It also has a slimmer bill. The white band on its face is narrower than that of the otherwise similar white-crowned forktail: it is also distinguished by its white, rather than black, breast.
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Canadian Museum of History. Most Thule artifacts were made from bone, antler, ivory and wood; they used few stone tools, preferring cutting edges of metal obtained either from natural deposits or from Greenlandic Norse. Thule culture declined after about 1600 AD from a combination of deteriorating climatic conditions and the introduction of diseases from contact with Europeans, but the people continued to occupy arctic Canada and are directly ancestral to the historic Inuit. = Magazine Archaeology, Vol.
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Where the ribs meet the upper edge, they sometimes form crenulations ( a scalloped effect) and may also produce the same effect on the lower edge of the jaw. In other individuals, the ribs extend across the jaw, making both the upper and the cutting edges of the jaw clearly toothed in outline. In the Kerry slug, as in all species within the family Arionidae, the alimentary canal of the digestive system forms two loops."Family summary for Arionidae" .
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Also, unlike other hyenas, the female spotted hyena's external genitalia closely resembles that of the male. Their dentition is similar to that of the canid, but is more specialised for consuming coarse food and crushing bones. The carnassials, especially the upper, are very powerful and are shifted far back to the point of exertion of peak pressure on the jaws. The other teeth, save for the underdeveloped upper molars, are powerful, with broad bases and cutting edges.
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A pair of scissors consists of two pivoted blades. In lower-quality scissors, the cutting edges are not particularly sharp; it is primarily the shearing action between the two blades that cuts the material. In high-quality scissors, the blades can be both extremely sharp, and tension sprung – to increase the cutting and shearing tension only at the exact point where the blades meet. The hand movement (pushing with the thumb, pulling with the fingers) can add to this tension.
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The dentition was full and highly selenodont, i.e. the premolars and molars had curved and crescent-shaped cutting edges (as in today's ruminants). The skull was small, with a short snout and orbits closed posteriorly placed at the center of the skull. A peculiar characteristic of this group were the auditory bulla, protective structures of the bones of the ear : they were very large, like those that are found today in small mammals that live in open and dry environments.
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In the US, they are commonly known as plug taps, whereas in Australia and Britain they are commonly known as second taps. ;Taper tap: The small tap illustrated at the bottom of the image is similar to an intermediate tap but has a more pronounced taper to the cutting edges. This feature gives the taper tap a very gradual cutting action that is less aggressive than that of the plug tap. The number of tapered threads typically ranges from 8 to 10.
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These curettes are area-specific due to the design of the face of the instrument in relation to the terminal shank. Because the face is at a 70-degree angle from the terminal shank, one of the cutting edges is lower than the other, and this is the cutting edge that is used during periodontal debridement. Similar to the universal curette, the Gracey curette features a rounded back and toe with a semicircular cross section, which prevents damaging the gingival tissue.
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The Lebombo bone is a bone tool made of a baboon fibula with incised markings discovered in the Lebombo Mountains located between South Africa and Swaziland. Changes in the section of the notches indicate the use of different cutting edges, which the bone's discoverer, Peter Beaumont, views as evidence for their having been made, like other markings found all over the world, during participation in rituals. The bone is between 44,200 and 43,000 years old, according to 24 radiocarbon datings.Francesco d’Errico et al.
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This prevents clogs and removes chips before they can melt and bond with the tool's cutting edges, which ruins the tool. Tool geometries, or cutting and fluting angles, are essential to the tool's performance. A minute change in angle or cutting radius can make a significant difference in the tool's balance, chiploads and other performance characteristics. IMCO and other tool manufacturers conduct extensive research to fine-tune these geometries, especially for use in heat-treated alloy steels, Inconel, Hastelloy and other engineered metals.
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Unlike most other types of drill bits, they are not practical to use as hand tools. The bit includes a center point which guides it throughout the cut (and incidentally spoils the otherwise flat bottom of the hole). The cylindrical cutter around the perimeter shears the wood fibers at the edge of the bore, and also helps guide the bit into the material more precisely. The tool in the image has a total of two cutting edges in this cylinder.
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The curvature and length of the holotype tooth and the length of its hindmost cutting edge (carina) indicates it was in the front of the jaw. Estimated size of Dromaeosauroides, and possible placement of the two known teeth The tooth is recurved with a backward bend, and is oval in cross-section. Its front and back cutting edges are finely serrated, extending two-thirds down each edge. There are six denticles per millimeter (0.04 in), and each denticle is square and chiseled.
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Bushbabies in this genus are specialist consumers of gum. The distinctive teeth, with fan-like lower incisors with sharp-cutting edges, are probably used to enlarge wounds in tree limbs so that gum is exuded more freely. It is unlikely that these teeth are capable of making gashes in large limbs with thick bark, so the animal is probably reliant on wounds made by anomalures, cicadas and wood-boring beetles. Trees on which this species likes to feed include Albizia, Entada and Newtonia species.
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They had a small triangular or rhomboidal shape at the tip, with sharp cutting edges, and a long forked peduncle, each lobe of which divides into four lobelets proximally. The new teeth developed inside the peduncular fork; the scientific name Schizorhiza - meaning "split root" - refers to the shape of the rostral teeth. The oral teeth were very small (about 1.5-2.5 mm high and 1–2 mm wide), with a large and recurved central point and keels at the side that formed tiny secondary points.
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C. escheri teeth share resemblance to those of Isurus, Cosmopolitodus hastalis, and Carcharodon to some extent. Adult anterior upper teeth measure 2.7-4.2 cm and have an average angle between root lobes of 135°. All teeth possess lateral cusplets and crenulated and irregular faint serrated cutting edges, comparable to the edges of emery paper. C. escheri teeth are dignathically heterodontic with pointed and narrow lower teeth for grasping prey and broader blade-like upper teeth for cutting flesh, suggesting an intermediate diet between Isurus and Carcharodon/Cosmopolitodus.
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Others showed decorations such as chevrons, incised patterns and corded impressions. Flints were similar to those found at Tell Ramad and included Byblos points, hooks, scrapers, borers and burins. Burials were found within two houses, which were excavated and found to be similar to those in earlier PPNB and PPNA sites. A range of sickle blades were found in the basal deposits and higher levels showing the evolution of denticulated and segmented cutting edges with similarities to those found at the oldest neolithic Byblos.
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In: Plavcan J.M., van Schaik C., Kay R.F., Jungers W.L. (Eds) Reconstructing Behavior in the Primate Fossil Record. Kluwer Academic/Plenum Publishers, New York, pp. 339–370 although this hypothesis cannot be confirmed from bones of the postcranial skeleton (there are none). The known dental specimens show extremely heavy and rapid wear and the first molar tooth is far more worn than the last, suggesting that it included abrasive foods in its diet with very poorly developed cutting edges indicating a diet of fruit.
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Restoration Thalattoarchon is a large-bodied ichthyosaur that is estimated to have grown at least in length. The only known skeleton of Thalattoarchon is incomplete, but it can be inferred on the basis of other early ichthyosaurs to have had an elongated body and a weakly developed caudal fin. Thalattoarchon is diagnosed by a single distinguishing feature that is unique among ichthyosaurs: large, thin teeth that bear two cutting edges and that have smooth tooth crowns. Most later ichthyosaurs have much smaller cone-shaped teeth.
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In Neolithic times Lipari was, much like Sardinia, one of the few centers of trading in obsidian, a hard black volcanic glass prized by Neolithic peoples for the extremely sharp cutting edges that can be obtained. Lipari's history is rich in incidents as witnessed by the recent retrievals of several necropoli and other archaeological sites. Humans seem to have inhabited the island already in 5000 BC, though a local legend gives the eponymous name "Liparus" to the leader of a people coming from Campania.
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The multiple cutting edges quickly sharpen the pencil, with a more precise finish than a single-blade device. Some cylindrical sharpeners have only one helical cutter cylinder, but most have two cylinders or more. Most planetary sharpeners have a large opening, with a rotatable guide disk in front of it that has multiple holes of different sizes, to accommodate pencils of many different diameters. Advanced models have a spring-driven holder for the pencil, so that the pencil automatically is pushed into the mechanism while being sharpened.
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Because extreme temperatures are generated in the cutting zone, where the cutting edges shear through the material at very high speeds, coatings are added to deflect the heat away from the tool. Coatings offer varying degrees of heat protection, or hot hardness, as well as other unique performance characteristics, depending on their formulation. Tools coated with each formulation will work well in some materials and poorly in others. Coatings also provide a degree of lubricity that helps evacuate metal cuttings or chips, from the cutting zone.
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Both the front and back cutting edges are serrated, with two to four denticles per mm (0.04 in). The tooth also has longitudinal ridges on both sides, and the outermost enamel layer has a wrinkled texture in the regions between and without ridges. Among the oldest known spinosaurid fossils, Ostafrikasaurus may be of importance in understanding the evolutionary origins of spinosaurids and their anatomical adaptations. From comparisons with its later relatives, Ostafrikasaurus indicates that spinosaur teeth became more conical and lost their serrations throughout their evolution.
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A stone CNC router is a type of CNC router machine designed for marble, granite, artificial stone, tombstone, ceramic tiles, glass machining, polishing for arts and crafts, etc. Wood, metal and stone require different “bits” or “inserts”. There is bit call as diamond tools with different diameter 4mm,6mm,8mm mainly used. For wood CNC-ing, bits with sharp cutting edges are used, while for Stone CNC-ing, the bits are made of a metal bar with a sintered layer of extremely hard but roughly shaped particles.
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Gun barrels are the obvious example; hence the name. Other uses include moldmaking, diemaking, and the manufacture of combustion engine parts such as crankcase, cylinder head, and woodwind musical instruments, such as uilleann pipes, as gun drills can drill long straight holes in metal, wood, and some plastics. The coolant provides lubrication and cooling to the cutting edges and removes the swarf or chips from the hole. Modern gun drills use carbide tips to prolong life and reduce total cost when compared with steel tips.
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The preserved holotype dentary tip of Neimongosaurus preserves an erupted tooth that is lanceolate-shaped with small coarse serrations, falling within this type of dentition. Another type of dental morphology is the one seen on the highly specialized Segnosaurus. In this taxon, the teeth are very heterodont, leaf-shaped with relatively less denticles that are prominently developed being bigger than in the previous therizinosaurids. These denticles are composed of numerous folded carinae (cutting edges) with denticulated front edges, creating a roughened and shredding surface near the base of the tooth crowns.
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They are piled up to amorphous heaps of paint with sharp-cutting edges. Brown comments on his three-dimensional use of brushstrokes as follows: "I see the sculptural brush marks as challenging the logic of paint in that they appear to defy gravity by actually staying upright. For me, they exist within a surreal world that is based on getting paint to do something it shouldn‘t do, and to sit in a three- dimensional world that it shouldn‘t be in.".Quoted in Furthermore, Brown modulates the sculptures by suggestively painting 'shadows' on them.
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Aegyptopithecus zeuxis was a species that had a dental formula of 2:1:2:3 on both the upper and lower jaws, with the lower molars increasing in size posteriorly. The molars showed an adaptation called compartmentalizing shear, which is where the cutting edges involved in the buccal phase serve to surround basins in such a way that food is cut into fragments that are trapped and then ground during the lingual phase. The canines of this species were sexually dimorphic. The ascending mandibular ramus of this species is relatively broad.
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Although a thresher shark, scientists hypothesized that A. palatasi may have looked similar to the great white shark. A. palatasi is only known from isolated teeth. They are large, measuring up to an excess of in height and suggesting a shark that grew to similar sizes or was larger than the modern great white shark, which grows between on average and up to in maximum length. The crown is arched and broad with cutting edges possessing coarse serrations that are largely irregular in size but become finer towards the tip.
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Other instruments (not generally considered to be "brass knuckles" or "metal knuckles" per se) may have spikes, sharp points and cutting edges. These devices come in many variations and are called by a variety of names, including "knuckle knives." By the late 19th century, knuckledusters were incorporated into various kinds of pistols such as the Apache revolver used by criminals in France in the late 19th to early 20th centuries. During World War I the US Army issued two different knuckle knives, the US model 1917 and US model 1918 Mark I trench knives.
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Self-tapping screws can be divided into two classes; those that displace material (especially plastic and thin metal sheets) without removing it are termed thread-forming self-tapping screws; self-tappers with sharp cutting surfaces that remove the material as they are inserted are termed thread-cutting. Thread-forming screws may have a non-circular plan view, such as the five-fold symmetry of the pentalobular or three-fold symmetry for Taptite screws. Thread-cutting screws have one or more flutes machined into their threads, giving cutting edges.
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The first shield was only able to be steered in a straight line, whilst the second one could be steered through gentle curves. The tunnelling was constructed under compressed air and the river-bed lined with puddle clay. The extensive precautions undertaken during its construction meant that none of the workforce were killed, a rarity at that time for a project of this size and complexity. The entrance arches have been formed from cutting edges from the second tunnelling shield, which measured in diameter,Rolt Hammond, Civil Engineering Plant and Methods, p. 150.
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The cutting edges are typically strengthened by the addition of zinc, manganese, or rarely, iron, in amounts up to about 4% of the dry weight. They are typically the largest mouthparts of chewing insects, being used to masticate (cut, tear, crush, chew) food items. They open outwards (to the sides of the head) and come together medially. In carnivorous, chewing insects, the mandibles can be modified to be more knife- like, whereas in herbivorous chewing insects, they are more typically broad and flat on their opposing faces (e.g.
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Many factors contribute to the surface finish in manufacturing. In forming processes, such as molding or metal forming, surface finish of the die determines the surface finish of the workpiece. In machining, the interaction of the cutting edges and the microstructure of the material being cut both contribute to the final surface finish. In general, the cost of manufacturing a surface increases as the surface finish improves.. Any given manufacturing process is usually optimized enough to ensure that the resulting texture is usable for the part's intended application.
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The lower jaw was down-turned at the front and the teeth were distinct in having additional as well as third cutting edges in some of the hindmost teeth. The forelimbs were robust and had three fingers which bore large claws, and the feet had four toes supporting the foot—apart from therizinosaurs, all theropods had three-toed feet. The front of the pelvis was adapted to support the enlarged belly. The pubic bone was turned backwards, a feature that is only seen in birds and the dinosaurs most closely related to them.
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4 bladed hollow mill Hollow milling cutters, more often called simply hollow mills, are essentially "inside-out endmills". They are shaped like a piece of pipe (but with thicker walls), with their cutting edges on the inside surface. They were originally used on used on turret lathes and screw machines as an alternative to turning with a box tool, or on milling machines or drill presses to finish a cylindrical boss (such as a trunnion). Hollow mills can be used on modern CNC lathes and Swiss style machines.
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In acleistorhinids, the marginal teeth, which are small and recurved, are suggestive of an insectivorous diet, as they probably were used for gripping and piercing arthropod cuticle. The denticulated palate, with three pairs of tooth fields and smaller teeth in between the fields, is seen as an adaptation for holding food in the oral cavity. The teeth, which possess cutting edges, may also have been suitable for a carnivorous diet in which vertebrate flesh may have been consumed. It is possible that acleistorhinids would have preyed on tetrapods that were small enough to swallow whole.
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The grinding faces had to be dressed or picked at regular intervals to keep the cutting edges sharp. The upper or runner stone could be raised or lowered depending on whether fine, pinhead or coarse oatmeal was required. The meal was lifted to the first floor or upper level where it was cleaned, winnowed and sieved on a series of shakers and fans located there. After this, it was taken back to the lower ground floor to be bagged and then hoisted to the storage area to await collection.
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The blade might be sharpened along its entire length or sharpened only from the center to the tip (as described by Capoferro). Pallavicini, a rapier master in 1670, strongly advocated using a weapon with two cutting edges. A typical example would weigh and have a relatively long and slender blade of or less in width, or more in length and ending in a sharply pointed tip. The blade length of quite a few historical examples, particularly the Italian rapiers in the early 17th century, is well over and can even reach .
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Aside from a very small deposit of telluric iron in Kassel, Germany, which has now been depleted, and a few other minor deposits from around the world, the only known major deposits exist in and nearby the area of Disko Bay, in Greenland. Found in the volcanic plains of basalt rock, the material was used by the local Inuit to make cutting edges for tools like knives and ulus. The Inuit were the only people to make practical use of telluric iron. In the late 1840s, Adolf Erik Nordenskiöld discovered large boulders of iron near the Disko Bay area of Greenland.
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Blade shears consist of two blades arranged similarly to scissors except that the hinge is at the end farthest from the point (not in the middle). The cutting edges pass each other as the shearer squeezes them together and shear the wool close to the animal's skin. Blade shears are still used today but in a more limited way. Blade shears leave some wool on a sheep and this is more suitable for cold climates such as the Canterbury high country in the South Island of New Zealand where approximately half a million sheep are still shorn with blade shears each year.
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Nickel titanium (NiTi) rotary file used in dentistry A nickel titanium (NiTi) rotary file is an engine-driven tapered and pointed endodontic instrument made of nickel titanium alloy with cutting edges used to mechanically shape and prepare the root canals during endodontic therapy or to remove the root canal obturating material while performing retreatment. The first NiTi file was introduced to the market in 1991. Superelasticity and shape memory are the properties that make Niti files very flexible. The high flexibility of Niti files makes them superior to stainless steel files for the purpose of rotary root canal preparation.
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His knife had sections of grooves or serrations, inclined with respect to the axis of the blade, that form individual small cutting edges which were perpendicular to the blade and thus cut without the excessive normal pressure required of a scalloped blade and without the horizontal force required by positive-raked teeth that would dig into the bread like a wood saw. There were also sections of grooves with the opposite direction of inclination, separated by a section of smooth blade, and the knife thus cut cleanly in both directions in both hard and soft bread.
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In 2014, she recorded a music project named ‘Only Few Can Relate,’ which she simultaneously released in April 2017 with her ‘May All Fears inside Abort’ EP. Abena is associated with cutting edges lyrics about life and the realities of living. In September 2017, her eponymous single, ‘Abena’, was selected for study at the Department of African Studies at Howard University in the USA. At the start of 2018, a Swedish television station, Sveriges Television featured Abena Rockstar in their documentary about Ghanaian hiphop. Abena Rockstar released her debut album, the Harvest Season LP, in March 2019.
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It is also being used as a coating by some weapon manufacturers/custom gunsmiths. Some forms have been certified in the EU for food service and find extensive uses in the high-speed actions involved in processing novelty foods such as potato chips and in guiding material flows in packaging foodstuffs with plastic wraps. DLC coats the cutting edges of tools for the high-speed, dry shaping of difficult exposed surfaces of wood and aluminium, for example on automobile dashboards. The wear, friction, and electrical properties of DLC make it an appealing material for medical applications.
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Oromycter was a small caseid characterized by its dentition, which lacked the distinct leaf-like serrations of other caseids and instead possessed broad, spatulate and roughened cutting edges. Its teeth were also more thoroughly attached to the bone of the skull and jaw than in other members of Caseidae. The first and second teeth of the premaxilla show distinct wear facets which suggest that they occluded with the first and second teeth of the dentary, possibly to facilitate the cropping of vegetation. Its lacrimal bone, while clearly caseid in form, appears more primitive than in any other known caseid.
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Between the first canine and the fifth postcanine tooth, the maxilla (main upper jaw bone) became thicker and formed bony supports divided by deep furrows between each tooth, which would have helped the animal's dentition precisely interlock when it closed its jaws. Ankylorhiza's sharp-tipped teeth had carinae (cutting edges) on both edges that bore occasional serrations, and its tooth enamel was adorned with lengthwise ridges. The lower incisors in the upper jaw were tusk-like and angled forwards. The morphology of Ankylorhiza's forelimbs was between that of basal (early-diverging or "primitive") and living cetaceans.
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By 2005, IMCO had introduced the POW-R-FEED M9 series, a group of high-performance end mills effective in milling, pocketing, slotting and finishing in titanium and stainless steel and other very hard metals. This demand for machining in engineered metals also prompted a return to the M5 enDURO M505 end mill for redesign. In 2011, the second generation enDURO M525 was launched with refined geometries for even stronger, more chip-resistant cutting edges and higher metal removal rates. Repeated testing showed enDURO tools were effective in titanium and other hard metals even using low-horsepower machining centers.
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The snow goose has two color plumage morphs, white (snow) or gray/blue (blue), thus the common description as "snows" and "blues". White- morph birds are white except for black wing tips, but blue-morph geese have bluish-grey plumage replacing the white except on the head, neck and tail tip. The immature blue phase is drab or slate-gray with little to no white on the head, neck, or belly. Both snow and blue phases have rose-red feet and legs, and pink bills with black tomia ("cutting edges"), giving them a black "grin patch".
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In the southern hemisphere, so-called giant discs are a specialised kind of disc harrows that can stand in for a plough in rough country where a mouldboard plough cannot handle tree-stumps and rocks, and a disc-plough is too slow (because of its limited number of discs). Giant scalloped-edged discs operate in a set, or frame, that is often weighted with concrete or steel blocks to improve penetration of the cutting edges. This sort of cultivation is usually followed by broadcast fertilisation and seeding, rather than drilled or row seeding. A drag is a heavy harrow.
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Reconstruction of the dentition of C. mantelli Distinguishing characteristics of Cretoxyrhina teeth include a nearly symmetrical or slanted triangular shape, razor-like and non-serrated cutting edges, visible tooth necks (bourlette), and a thick enamel coating. The dentition of Cretoxyrhina possesses the basic dental characteristics of a mackerel shark, with tooth rows closely spaced without any overlap. Anterior teeth are straight and near-symmetrical, while lateroposterior teeth are slanted. The side of the tooth facing the mouth is convex and possesses massive protuberance and nutrient grooves on the root, whereas the labial side, which faces outwards, is flat or slightly swollen.
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'Scarcely more than a tiny drop of blood. although the F–S knife is capable of being used to inflict slash cuts upon an opponent when its cutting edges are sharpened according to specification.Cassidy, William L., A Brief History of the Fairbairn–Sykes Fighting Knife The Wilkinson Sword Company made the knife with minor pommel and grip design variations. The F–S knife is strongly associated with the British commandos and the US Office of Strategic Services (OSS) and Marine Raiders (who based their issued Stiletto knife on the Fairbairn–Sykes), among other special forces/clandestine/raiding units.
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Usually each segment in a chain (which is constructed from riveted metal sections similar to a bicycle chain, but without rollers) features small sharp cutting teeth. Each tooth takes the form of a folded tab of chromium- plated steel with a sharp angular or curved corner and two beveled cutting edges, one on the top plate and one on the side plate. Left-handed and right- handed teeth are alternated in the chain. Chains come in varying pitch and gauge; the pitch of a chain is defined as half of the length spanned by any three consecutive rivets (e.g.
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The shank is the end of a drill bit grasped by the chuck of a drill. The cutting edges of the drill bit contact the workpiece, and are connected via the shaft with the shank, which fits into the chuck. In many cases a general- purpose arrangement is used, such as a bit with cylindrical shaft and shank in a three-jaw chuck which grips a cylindrical shank tightly. Different shank and chuck combination can deliver improved performance, such as allowing higher torque, greater centering accuracy, or moving the bit independently of the chuck, with a hammer action.
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It is clear that the sieve was suspended from the shears in such a way that the cutting edges of the blades made tangents to the outer rim of the sieve. Thus suspended the sieve is capable of some sideways movement, or even of dropping. The sieve was held by the two middle fingers only making it almost impossible to keep the sieve still for any length of time and thus ensuring a prognostication. The complicating factor is that in the Latin text accompanying the picture the sieve is said to "turn around" (circum agatur), which clearly it cannot do unless held at two diametrically opposite points on the outer rim.
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Other knives that have become widely used in Japan are the French chef's knife and the sujihiki, roughly analogous to a western carving knife. While these knives are usually sharpened symmetrically on both sides, their blades are still given Japanese-style acute-angle cutting edges of 8-10 degrees per side with a very hard temper to increase cutting ability. Most professional Japanese cooks own their personal set of knives. After sharpening a carbon-steel knife in the evening after use, the user may let the knife "rest" for a day to restore its patina and remove any metallic odor or taste that might otherwise be passed on to the food.
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The basic oxygen process is used in all modern steelworks; the last Bessemer converter in the U.S. was retired in 1968. Furthermore, the last three decades have seen a massive increase in the mini-mill business, where scrap steel only is melted with an electric arc furnace. These mills only produced bar products at first, but have since expanded into flat and heavy products, once the exclusive domain of the integrated steelworks. Until these 19th-century developments, steel was an expensive commodity and only used for a limited number of purposes where a particularly hard or flexible metal was needed, as in the cutting edges of tools and springs.
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Buitreraptor has a slender, flat, extremely elongated snout with many small teeth that lack meat- tearing serrations or cutting edges and are grooved, strongly recurved and flattened. From this, the scientists who initially described it concluded that this dinosaur was not a hunter of relatively large animals like some other dromaeosaurs, but rather a hunter of small animals such as lizards and mammals. The forelimbs of Buitreraptor were long and ended in very long and thin three-fingered hands. All known parts of the hand of Buitreraptor are proportionally longer than in the dromaeosaurids Deinonychus and Velociraptor, except for the ungual bones which are proportionally smaller in Buitreraptor.
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The cutting blades are adjusted to match the height and pitch of (& made square to) the outfeed table. The work piece to be planed flat is placed on the infeed table and passed over the cutter head to the outfeed table, with care taken to maintain a constant feed speed and downward pressure. The cutter head contains two or more knives which are honed to a very sharp edge. The knives are arranged radially in the cylindrical cutter head such that their cutting edges protrude from the cutter head so that they will come into contact with the board being cut as the cutter head spins.
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High-speed steel twist bit drilling into aluminium with methylated spirits lubricant Under normal usage, swarf is carried up and away from the tip of the drill bit by the fluting of the drill bit. The cutting edges produce more chips which continue the movement of the chips outwards from the hole. This is successful until the chips pack too tightly, either because of deeper than normal holes or insufficient backing off (removing the drill slightly or totally from the hole while drilling). Cutting fluid is sometimes used to ease this problem and to prolong the tool's life by cooling and lubricating the tip and chip flow.
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A water cooled chainsaw cutting concrete Special chainsaws can cut concrete, brick and natural stone. These use similar chains to ordinary chainsaws, but with cutting edges embedded with diamond grit. They may use gasoline or hydraulic power, and the chain is lubricated with water, because of high friction and to remove stone-dust. The machine is used in construction, for example in cutting deep square holes in walls or floors, in stone sculpture for removing large chunks of stone during pre-carving, by fire departments for gaining access to buildings and in restoration of buildings and monuments, for removing parts with minimal damage to the surrounding structure.
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Showing head stripes Pallas's leaf warbler is one of the smallest warblers, with a large head and short tail. At long and in weight, it is slightly smaller than a yellow-browed warbler and barely any larger than a goldcrest. It has greenish upperparts and white underparts, but is very striking, with prominent pale yellow double wingbars on the wing covert feathers, bold yellow supercilia and central crown stripe, and a lemon-yellow rump. The bill is blackish-brown with a yellowish tinge to the cutting edges and the base of the lower mandible, the iris is brown, and the legs are brown with a green or greyish tinge.
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Unlike in most theropods, the carinae (cutting edges) of Siamosaurus teeth lack well-defined serrations, though unworn teeth do exhibit very fine denticles. Some teeth (including the holotype) have a wave-like double recurvature when viewed from the front or back, which Buffetaut and Ingavat compared to that seen in carnosaur teeth from the same formation and one Deinonychus tooth described by John Ostrom in 1969. The S. suteethorni holotype is symmetrically concave front to back, and bears 15 flutes (lengthwise grooves) on its lingual (inward facing) and labial (outward facing) surfaces. These flutes run from the base of the crown before stopping from the rounded tooth tip.
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Eyes are a recurring motif, as are manipulated images, calling into question the nature of reality and our ability to accurately perceive and remember it.Heldreth, Leonard G. "The Cutting Edges of Blade Runner" in These thematic elements provide an atmosphere of uncertainty for Blade Runners central theme of examining humanity. In order to discover replicants, an empathy test is used, with a number of its questions focused on the treatment of animals – seemingly an essential indicator of one's "humanity". The replicants appear to show compassion and concern for one another and are juxtaposed against human characters who lack empathy, while the mass of humanity on the streets is cold and impersonal.
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The technology that led to the development of the Japanese sword originated in China and was brought to Japan by way of Korea. The oldest steel swords found in Japan date to the fourth or fifth century A.D. Although appearing to be ceremonial in nature, samples of these straight blades preserved in the Shōsōin were hand-forged with hardened cutting edges. By the time of the Heian period (794—1185 AD) the Japanese sword took on its distinctive curved shape as a mounted horseman would have more use for a slashing type of blade as opposed to a thrusting type. These swords were known as tachi.
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Pteranodon skeleton at the Museum of Ancient Life. This large (and toothless) Late Cretaceous pterosaur was quite similar in size and proportions to Pelagornis and presumably had similar feeding habits. Unlike the true teeth of Mesozoic birds like Archaeopteryx or Aberratiodontus, the pseudoteeth of the Pelagornithidae do not seem to have had serrated or otherwise specialized cutting edges, and were useful to hold prey for swallowing whole rather than to tear bits off it. Since the teeth were hollow or at best full of cancellous bone and are easily worn or broken off in fossils, it is surmised they were not extremely resilient in life either.
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A modern Simba disc harrowA disc harrow is a harrow whose cutting edges are a row of concave metal discs, which may be scalloped, set at an oblique angle. It is an agricultural implement that is used to till the soil where crops are to be planted. It is also used to chop up unwanted weeds or crop remainders. It consists of many carbon steel discs, and sometimes longer-lasting boron discs, which have many varying concavities and disc blade sizes and spacing (the choices of the latter being determined by the final result required in a given soil type) and which are arranged into two sections ("offset disc harrow") or four sections ("tandem disc harrow").
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The cutting action of the gimlet is slightly different from an auger, however, as the end of the screw, and so the initial hole it makes, is smaller; the cutting edges pare away the wood which is moved out by the spiral sides, falling out through the entry hole. This also pulls the gimlet farther into the hole as it is turned; unlike a bradawl, pressure is not required once the tip has been drawn in. The name "gimlet" comes from the Old French guinbelet, guimbelet, later guibelet, probably a diminutive of the Anglo- French "wimble", a variation of "guimble", from the Middle Low German wiemel, cf. the Scandinavian wammie, to bore or twist.
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One of the main advantages of periodontal curettes is that in comparison to sickle scalers, they are finer and do not contain sharp points or corners other than the cutting edges on the blade. This means that unlike sickle scalers, curettes can be adapted around the tooth surface and can provide better access to deep pockets with minimal soft tissue trauma. In addition, Gracey curettes is the ideal instrument to use for subgingival scaling and root planing due to the design of the instrument that allows for best adaptation to root anatomy.Rempel D, Lee DL, Dawson K, Loomer P. The effects of periodontal curette handle weight and diameter on arm pain a four- month randomized controlled trial.
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The Barameda has an extremely elongated and thick body typical of Carboniferous rhizodonts, built for powerful swimming, and out- powering any prey larger than itself. It is covered with durable cosmoid scales all along its body, with thick bony plates covering its head and operculum (gill flaps), a tightly fused Skull roof, and extremely prominent, sharp fangs, devoid of serrations or cutting edges. It had an advanced lateral line system that was elaborated along its pectoral girdle, larger pectoral fins than pelvic fins, with deeply over-lapping scales along its fins, turning the pectoral fin into a large paddle. Its anal fins and secondary dorsal fins form a functional part of its tail.
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This not only enabled smaller job shops to share in the titanium work, it also allowed shops of all sizes to keep its older/low horsepower equipment running if higher horsepower centers were needed for another project, maximizing capacity and resources. With 2012 came the launch of the second generation of the original 4-flute POW-R-FEED with the introduction of the POW-R-FEED M924. This line expansion also marked the appearance of a new engineered coating - aluminum-chromium-nitride or AlCrNX - with improved heat protection. IMCO refined the tool's rake and relief angles and reinforced its cutting edges, which afforded users higher metal removal rates and shorter cycle times.
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The (serrations) were large and bulbous, diminishing slightly in size towards the tooth tips, with about 5–6 denticles per . The front (cutting edges) folded upwards to overlap the inner surface of the crowns on the third to eighteenth teeth, but such folds were absent on the second and probably first crowns. The denticles were roughly perpendicular with the tip of the tooth crowns but parallel to the crown height on the front side fold and triangular facet on the hind side. There was a series of accessory denticles (in addition to those on the carinae) that projected from the front surfaces of the carinal folds, which made the front edges of the crowns more broadly roughened.
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The fish owls have large, powerful, and curved talons and a longitudinal sharp keel underneath the middle claw with all having sharp cutting edges that are very much like those of eagle owls. Unlike fish-eating diurnal raptors, they do not submerge any part of their body while hunting, preferring only to put their feet into the water, although fish owls wade into the shallows. The feathers of fish owls are not soft to the touch and lack the comb and hair-like fringes to the primaries, which allow other owls to fly silently in order to ambush their prey. Due to the lack of these feather-specializations, fish owl wing beats make sounds.
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While more expensive, due to more complex design and manufacturing process, such end mills can last longer due to less wear and improve productivity in high speed machining (HSM) applications. It is becoming increasingly common for traditional solid end mills to be replaced by more cost-effective inserted cutting tools (which, though more expensive initially, reduce tool-change times and allow for the easy replacement of worn or broken cutting edges rather than the entire tool). End mills are sold in both imperial and metric shank and cutting diameters. In the USA, metric is readily available, but it is only used in some machine shops and not others; in Canada, due to the country's proximity to the US, much the same is true.
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This system came to be known as armory practice or the American system of manufacturing, which spread throughout New England aided by skilled mechanics from the armories who were instrumental in transferring the technology to the sewing machines manufacturers and other industries such as machine tools, harvesting machines and bicycles. Singer Manufacturing Co., at one time the largest sewing machine manufacturer, did not achieve interchangeable parts until the late 1880s, around the same time Cyrus McCormick adopted modern manufacturing practices in making harvesting machines. Mass production benefited from the development of materials such as inexpensive steel, high strength steel and plastics. Machining of metals was greatly enhanced with high speed steel and later very hard materials such as tungsten carbide for cutting edges.
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This process involves the highest velocities (≈3500 m/s shockwave that propels the coating materials) and temperatures (≈4000 °C) of coating materials compared to all other forms of thermal spraying techniques. Which means detonation spraying is able to apply low porous (below 1%) and low oxygen content (between 0.1-0.5%) protective coatings that protect against corrosion, abrasion and adhesion under low load. This process allows the application of very hard and dense surface coatings which are useful as wear resistant coatings. For this reason, detonation spraying is commonly used for protective coatings in aircraft engines, plug and ring gauges, cutting edges (skiving knives), tubular drills, rotor and stator blades, guide rails or any other metallic material that is subject to high wear and tear.
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It is the first direct proof of such sheaths with any stegosaurian. The study considered the presence of a sheath to be a strong indication that the plate had primarily a defensive function, as a horn layer would have strengthened the plate as a whole and provided it with sharp cutting edges. Also the display function would have been reinforced, because the sheath would have increased the visible surface and such horn structures are often brightly coloured. Thermoregulation, on the other hand — another often assumed rôle of the plates — would have been hampered by an extra insulating layer and the smoothness of the surface, but cannot be entirely ruled out as extant cattle and ducks use horns and beaks to dump excess heat despite the horn covering.
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CATRA was originally set up by the British Government in 1952 to carry out developments for the UK's cutlery and knife industries, for which the area of Sheffield in Yorkshire is world-famous. CATRA has developed a range of unique machines for measuring the cutting performance of all types of cutting edges from razor blades to large knives used in machinery and for testing of blade performance in general. Since the 1980s CATRA has become an internationally recognised (60% export, CATRA published accounts 2013) cutting technology organisation, supplying consultancy, testing services and knife/blade making and testing equipment to manufacturers, developers, designers, users and retailers. Their particular expertise is unusual and important to the knife history and culture of Sheffield.
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The basic design of pliers has changed little since their origins, with the pair of handles, the pivot (often formed by a rivet), and the head section with the gripping jaws or cutting edges forming the three elements. The materials used to make pliers consist mainly of steel alloys with additives such as vanadium or chromium, to improve strength and prevent corrosion. The metal handles of pliers are often fitted with grips of other materials to ensure better handling; grips are usually insulated and additionally protect against electric shock. The jaws vary widely in size, from delicate needle-nose pliers to heavy jaws capable of exerting much pressure, and shape, from basic flat jaws to various specialized and often asymmetrical jaw configurations for specific manipulations.
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Nininger reports several other such instances, in the Southwest US and elsewhere, such as the discovery of Native American beads of meteoric iron found in Hopewell burial mounds, and the discovery of the Winona meteorite in a Native American stone-walled crypt.A. L. Christenson, J. W. Simmons' Account of the Discovery of the Winona Meteorite. Meteorite 10(3):14–16, 2004 A lance made from a Narwhal tusk with a meteorite iron head Indigenous peoples often prized iron- nickel meteorites as an easy, if limited, source of iron metal. For example, the Inuit used chips of the Cape York meteorite to form cutting edges for tools and spear tips. Two of the oldest recorded meteorite falls in Europe are the Elbogen (1400) and Ensisheim (1492) meteorites.
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Compared to eagle owls of similar length, fish owls tend to be even shorter in tail length and even heavier in build, have relatively larger wings, have considerably longer legs, and have a rough texture to the bottom of their toes. At least the latter two features are clear adaptations to aid these owls in capturing fish. Diurnal raptors who feed largely on fish have similar, if not identical, rough texture under their toes, which helps these birds grasp slippery fish. Unlike diurnal raptors who capture fish such as the osprey (Pandion haliaetus) as compared to most terrestrial raptors, the fish owls have large, powerful, and curved talons and a longitudinal sharp keel sitting under the middle claw with all having sharp cutting edges that are very much like those of eagle owls.
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At least the latter two features are clear adaptations to aid these owls in capturing fish. Diurnal raptors who feed largely on fish have similar, if not identical, rough texture under their toes, which helps these birds grasp slippery fish. Unlike diurnal raptors who capture fish such as the osprey (Pandion haliaetus) as compared to most terrestrial raptors, the fish owls have large, powerful, and curved talons and a longitudinal sharp keel sitting under the middle claw with all having sharp cutting edges that are very much like those of eagle owls. Also, unlike many fish-eating diurnal raptors, fish owl will not submerge any part of their body while hunting, preferring only to put their feet into the water, although fish owls will hunt on foot, wading into the shallows.
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Lower jaw of Erlikosaurus (bottom) and Segnosaurus (top) Erlikosaurus lived alongside a larger species of therizinosaurid in the Bayan Shireh Formation, Segnosaurus. In 2016, Zanno and colleagues re-examined the lower jaws and dentition of Segnosaurus making direct comparisons with those of Erlikosaurus in the process. They identified rather complex features in the dentary teeth of Segnosaurus, which are represented by the presence of numerous carinae (cutting edges) and folded carinae with denticulated front edges, and the enlargement of denticles (serrations). These traits together create a roughened, shredding surface near the base of the tooth crowns that was unique to Segnosaurus and suggest it consumed unique food resources or used highly specialized feeding strategies, with the addition of a higher degree of oral food processing than the sympatric—related species that lived in the same area at the same time—Erlikosaurus.
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Glele also signed treaties with the French, who had previously acquired a concession in Porto-Novo from its king. The French were successful in negotiating with Glele and receiving a grant for a customs and commerce concession in Cotonou during his reign. Glele resisted British diplomatic overtures, however, distrusting their manners and noting that they were much more activist in their opposition to the slave trade: though revolutionary France itself had outlawed slavery at the end of the 18th century it allowed the trade to continue elsewhere; Britain outlawed slavery in the United Kingdom and in its overseas possessions in 1833, and had its navy make raids against slavers along the West African coast starting in 1840. Glele's symbols are the lion and the ritual knife of the adepts of Gu (Vodou of fire, iron, war, and cutting edges).
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Restoration of two specimens The American paleontologist O. C. Marsh named Sphenacodon (from Greek ' "wedge" + ' "point" + ' (-odon) "tooth") in 1878, based on part of a lower jaw (dentary) bone found in the redbeds of northern New Mexico by fossil collector David Baldwin. In his very short description of the jaw, Marsh cited the back teeth as characteristic ("crowns are much compressed, and have very sharp cutting edges without crenulations") and assessed the animal as "about six feet in length, and carnivorous in habit," although the rest of the skeleton was not known. He did not provide an illustration of the specimen. Marsh gave the genus the Latin specific name ferox "fierce" and erected the new family Sphenacodontidae, placed under the primitive reptilian order "Rhynchocephala" (=Rhynchocephalia), then including nearly all groups of early reptiles in addition to the living tuatara.
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A stand of basic scaffolding on a house construction site, with diagonal braces to maintain its structure In engineering, a diagonal brace is a beam used to brace a rectangular structure (such as scaffolding) to withstand strong forces pushing into it; although called a diagonal, due to practical considerations diagonal braces are often not connected to the corners of the rectangle. Diagonal pliers are wire- cutting pliers defined by the cutting edges of the jaws intersects the joint rivet at an angle or "on a diagonal", hence the name. A diagonal lashing is a type of lashing used to bind spars or poles together applied so that the lashings cross over the poles at an angle. In association football, the diagonal system of control is the method referees and assistant referees use to position themselves in one of the four quadrants of the pitch.
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Thiers Issard Le Thiernois Sheffield silver steel, mirror-finished, singing, 5/8 inch blade, fully hollow ground, round-nose razor with decorated 24k gold- inlaid blade, fluted shank, double stabiliser, and double-pin, blonde horn scales A straight razor is a razor with a blade that can fold into its handle. They are also called open razors and cut-throat razors. The predecessors of the modern straight razors include bronze razors, with cutting edges and fixed handles, produced by craftsmen from Ancient Egypt during the New Kingdom (1569 - 1081 BC). Solid gold and copper razors were also found in Ancient Egyptian tombs dating back to the 4th millennium BC. The first steel-edged cutthroat razors were manufactured in Sheffield in 1680. By the late 1680s, early 1690s, razors with silver-covered handles along with other Sheffield-made products known as "Sheffield wares" were being exported to ports in the Gulf of Finland, approximately 1200 miles from Sheffield.
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A wide variety of thrusting knives have been described as daggers, including knives that feature only a single cutting edge, such as the European rondel dagger or the Afghan pesh-kabz, or, in some instances, no cutting edge at all, such as the stiletto of the Renaissance. However, in the last hundred years or so, in most contexts, a dagger has certain definable characteristics, including a short blade with a sharply tapered point, a central spine or fuller, and usually two cutting edges sharpened the full length of the blade, or nearly so.Emerson, Robert L., Legal Medicine and Toxicology, New York: D. Appleton & Co. (1909), p. 80Cassidy, William L., The Complete Book Of Knife Fighting, , (1997), pp. 9–18, 27–36Draper, Frank W., A Text-book of Legal Medicine, Philadelphia: W.B. Saunders & Co. (1905), pp. 341–343Gross, Hans, Criminal Investigation: A Practical Textbook for Magistrates, Police Officers and Lawyers, London: Sweet & Maxwell (1949), p.
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Together they mean "very sharp tooth", referring to the unusually sharp cutting edges of some C. catoxodon teeth. Six of the Cretalamna species have specific epithets that are named in honor of specific people, either for their contributions to the research of their associated species or for notable work they undertook. Of these six, five share a similar word structure that has a person's last name prefixed onto the Latin suffix -i (from). These species are C. arambourgi, which honors paleontologist Camille Arambourg for his discovery of the C. arambourgi type specimens and his contributions to North African paleontology; C. bryanti, which honors the Bryant family who helped enhance the reputation and missions of the University of Alabama, Alabama Museum of Natural History, and McWane Science Center through their commitment to education and support; C. deschutteri, which honors paleontologist Pieter De Scutter for his efforts to make Cretalamna teeth from a Bettrechies quarry available to Siversson et al.
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Such operations can be done with boring bars reaching through a hole while shifted off-center, then shifting onto center for the cut (for example, in the G76 fine boring cycle), or with back-deburring style tools whose cutting edges open and close in umbrella-like or check-valve-like fashion. Such back-cutting operations can obviate second operations, with their attendant setup time and part rehandling time. Sometimes the limiting factor in applying this advantage is the difficulty of chip clearance; the operator needs to intervene because chip nests prevent the tool from passing freely and opening and closing freely. In such cases, improved chipbreaking via different inserts in the main operation may help, and backspotfacing tools powered by coolant pressure and using through-tool coolant feed may succeed where others cannot (opening, cutting, and retracting despite some chips), not only obviating a second operation but also making the main operation less reliant on operator intervention and program stops (M00 or M01) than a lesser backspotfacing tool would.
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The orbit to skull size ratio of the C. browni skulls were compared to ratios of modern nocturnal and diurnal anthropoids in Rasmussen and Simmons (1992) and demonstrated that C. browni was most likely diurnal. The interorbital distance of the skulls was also compared to five taxa of modern primates in Rasmussen and Simons (1992), and demonstrated that C. browni had an interorbital distance range comparing it most closely to those of modern prosimians and callitrichids. In contrast to extant anthropoids that express a fused mandibular symphysis, the mandibular symphysis of C. browni was observed to be unfused but covered in small rugose features in at least seven specimens. The dentition of C. browni shows well developed crests on the buccal side (nearest to the cheek) of the tooth which is indicative of a folivorous and/or insectivorous diet, both of which require teeth expressing the cutting edges seen on the molars of C. browni. The three molars of C. browni decrease in size posteriorly, meaning that M1>M2>M3.
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