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Grind O Da Navir
A blade's grind is its cross-sectional shape in a plane normal to the edge. Grind differs from blade profile, which is the blade's cross-sectional shape in the plane containing the blade's edge and the centre contour of the blade's back (meaning the shape of the blade when viewed from the side, i.e. clip point, spear point, etc.). The ''grind'' of a blade should not be confused with the bevel forming the sharpened edge; it more usually describes the overall cross-section of the blade, not inclusive of the beveled cutting edge which is typically of a different, less acute angle as the bevel ground onto the blade to give it a cross-sectional shape. For example, the famous Buck 110 hunting knife has a "hollow ground" blade, with concave blade faces (which aid in slicing through materials), but the cutting edge itself is a simple, flat-ground bevel of lesser angle. It would be difficult, if not impossible, to put a "hollow grind" onto the actual cutting edge of the blade itself, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grind Stone
A blade's grind is its cross-sectional shape in a plane normal to the edge. Grind differs from Blade#Knife blade profiles .28Patterns.29, blade profile, which is the blade's cross-sectional shape in the plane containing the blade's edge and the centre contour of the blade's back (meaning the shape of the blade when viewed from the side, i.e. clip point, spear point, etc.). The ''grind'' of a blade should not be confused with the bevel forming the sharpened edge; it more usually describes the overall cross-section of the blade, not inclusive of the beveled cutting edge which is typically of a different, less acute angle as the bevel ground onto the blade to give it a cross-sectional shape. For example, the famous Buck 110 hunting knife has a "hollow ground" blade, with concave blade faces (which aid in slicing through materials), but the cutting edge itself is a simple, flat-ground bevel of lesser angle. It would be difficult, if not impossible, to put a "hollow grind" onto th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hrunting
Hrunting was a sword given to Beowulf by Unferth in the ancient Old English epic poem '' Beowulf''. Beowulf used it in battle against Grendel's mother. Beowulf is described receiving the sword in lines 1455-1458: And another item lent by Unferth at that moment of need was of no small importance: the brehon handed him a hilted weapon, a rare and ancient sword named Hrunting. The iron blade with its ill-boding patterns had been tempered in blood. It had never failed the hand of anyone who hefted it in battle, anyone who had fought and faced the worst in the gap of danger. This was not the first time it had been called to perform heroic feats. However, although the sword possessed great power and was claimed to have never failed anyone who used it, when Beowulf descended to the bottom of the lake to fight Grendel's mother, the sword proved ineffective. As the "fabulous powers of that heirloom failed," Beowulf was forced to discard it. Hrunting's significance Swords have great ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Weapon Design
A weapon, arm or armament is any implement or device that can be used to deter, threaten, inflict physical damage, harm, or kill. Weapons are used to increase the efficacy and efficiency of activities such as hunting, crime, law enforcement, self-defense, warfare, or suicide. In broader context, weapons may be construed to include anything used to gain a tactical, strategic, material or mental advantage over an adversary or enemy target. While ordinary objects – sticks, rocks, bottles, chairs, vehicles – can be Improvised weapon, used as weapons, many objects are expressly designed for the purpose; these range from simple implements such as Club (weapon), clubs, axes and swords, to complicated modern firearms, tanks, intercontinental ballistic missiles, Biological warfare, biological weapons, and cyberweapons. Something that has been re-purposed, converted, or enhanced to become a weapon of war is termed weaponized, such as a Biological warfare, weaponized virus or List of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blade Geometry
The term ''blade geometry'' refers to the physical properties of a sword blade: cross-section (or grind) and taper. Cross-section The cross-section of a blade is the primary way of determining its function and place in history. Early Middle Ages Early Viking and medieval European blades tended to have a lenticular cross-section. This type of design lacks a strong central ridge in the middle of the blade. The flexibility these blades have illustrates the purpose that they served, as primarily cutting weapons, that could also be used with the thrust. Late Middle Ages With the improvement in the defensive capabilities of armor in the High and Late Middle Ages, the cross-section of the sword blade adapted to suit the needs of warriors. Swords began to favour rigidity over flexibility as more rigid blades allowed for the stronger thrusts that were used to pierce armour. These blades were made with a diamond cross-section, which could be more or less acute, depending on the purpose ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kitchen Knives
A kitchen knife is any knife that is intended to be used in food preparation. While much of this work can be accomplished with a few general-purpose knives – notably a large chef's knife, a tough cleaver, a small paring knife and some sort of serrated blade (such as a bread knife or serrated utility knife) – there are also many specialized knives that are designed for specific tasks. Kitchen knives can be made from several different materials. Construction Material * Carbon steel is an alloy of iron and carbon, often including other elements such as vanadium and manganese. Carbon steel commonly used in knives has around 1.0% carbon (ex. AISI 1095), is inexpensive, and holds its edge well. Carbon steel is normally easier to resharpen than many stainless steels, but is vulnerable to rust and stains. The blades should be cleaned, dried, and lubricated after each use. New carbon-steel knives may impart a metallic or "iron" flavour to acidic foods, though over time, the ste ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Japanese Cutlery
Japanese may refer to: * Something from or related to Japan, an island country in East Asia * Japanese language, spoken mainly in Japan * Japanese people, the ethnic group that identifies with Japan through ancestry or culture ** Japanese diaspora, Japanese emigrants and their descendants around the world * Japanese citizens, nationals of Japan under Japanese nationality law ** Foreign-born Japanese, naturalized citizens of Japan * Japanese writing system, consisting of kanji and kana * Japanese cuisine, the food and food culture of Japan See also * List of Japanese people * * Japonica (other) * Japonicum * Japonicus * Japanese studies {{disambiguation Language and nationality disambiguation pages ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chisel
A chisel is a tool with a characteristically shaped cutting edge (such that wood chisels have lent part of their name to a particular grind) of blade on its end, for carving or cutting a hard material such as wood, stone, or metal by hand, struck with a mallet, or mechanical power. The handle and blade of some types of chisel are made of metal or of wood with a sharp edge in it. Chiselling use involves forcing the blade into some material to cut it. The driving force may be applied by pushing by hand, or by using a mallet or hammer. In industrial use, a hydraulic ram or falling weight ('trip hammer') may be used to drive a chisel into the material. A gouge (one type of chisel) serves to carve small pieces from the material, particularly in woodworking, woodturning and sculpture. Gouges most frequently produce concave surfaces. A gouge typically has a 'U'-shaped cross-section. Etymology ''Chisel'' comes from the Old French ''cisel'', modern ''ciseau'', Late Latin ''cisel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Puukko
A puukko () is a small traditional Finnish general purpose belt knife with a single curved cutting edge, solid hidden tang and, usually, a flat spine. Military models of puukko were popular in the Russian criminal underworld under the name "Finnish knife" or ''finka'' since the 20th century. The modified version were among the models on which the Soviet military knife NR-40 was based and which was informally called "finka". Design The basic components of a puukko are a handle and a blade along with a sheath, which can usually be attached to a belt but sometimes to a shirt or coat button. The blade is usually short, typically no longer than the handle and can often be less than 4" (100 mm). The flat grind makes the puukko a natural choice for slicing, cutting and whittling, and the flat spine allows the user to use a thumb or the other hand to bring more force to bear to the task at hand. Puukkos are most often used as carving tools for decorative and fire-making purposes and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Razor Strop
A razor strop or simply a strop (sometimes called a razor strap or strap) is a flexible strip of leather, canvas, denim fabric, balsa wood, or other soft material, used to straighten and polish the blade of a straight razor, a knife, or a woodworking tool such as a chisel. In many cases stropping re-aligns parts of the blade edge that have been bent out of alignment. In other cases, especially when abrasive polishing compound is used, stropping may remove a small amount of metal (functionally equivalent to lapping). Stropping can also burnish (i.e. push metal around on) the blade. The strop may be a hanging strop or a hand-held paddle. Various abrasive compounds may be applied to the strop to aid in polishing the blade while stropping to obtain a mirror-like finish. Common abrasive compounds include half-micron diamonds, green chromium(III) oxide, white rouge ( aluminum oxide), and jeweller's rouge (iron(III) oxide). Use Stropping is traditionally associated with straight raz ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Straight Razor
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 (1931km) from Sheffield. From there, these goods were probably sent to Finland and even Russia. By 1740, Benjamin Huntsman was making straight razors complete with decorated handles and hollow-ground blades made from cast steel, using a process he invented. Huntsman's proc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ground Blade Shapes
Ground may refer to: Geology * Land, the surface of the Earth not covered by water * Soil Soil, also commonly referred to as earth or dirt, is a mixture of organic matter, minerals, gases, liquids, and organisms that together support life. Some scientific definitions distinguish ''dirt'' from ''soil'' by restricting the former te ..., a mixture of clay, sand and organic matter present on the surface of the Earth Electricity * Ground (electricity), the reference point in an electrical circuit from which voltages are measured * Earthing system, part of an electrical installation that connects with the Earth's conductive surface * Ground and neutral, closely related terms Law * Ground (often grounds), in law, a rational motive or basis for a belief, conviction, or action taken, such as a legal action or argument: * Grounds for divorce, regulations specifying the circumstances under which a person will be granted a divorce Music * Ground (album), ''Ground'' (album), the sec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Goniometer
A goniometer is an instrument that either measures an angle or allows an object to be rotated to a precise angular position. The term goniometry derives from two Greek words, γωνία (''gōnía'') 'angle' and μέτρον (''métron'') 'measure'. The first known description of a goniometer, based on the astrolabe, was by Gemma Frisius in 1538. Applications Surveying Prior to the invention of the theodolite, the goniometer was used in surveying. The application of triangulation to geodesy was described in the second (1533) edition of ''Cosmograficus liber'' by Petri Appiani as a 16-page appendix by Frisius entitled ''Libellus de locorum describendorum ratione''. Communications The Bellini–Tosi direction finder was a type of radio direction finder that was widely used from World War I to World War II. It used the signals from two crossed antennas, or four individual antennas simulating two crossed ones, to re-create the radio signal in a small area between two loops ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
