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Obsidian is used by some surgeons for scalpel blades, although this is not approved by the US Food and Drug Administration (FDA) for use on humans. [59] Well-crafted obsidian blades, like any glass knife, can have a cutting edge many times sharper than high-quality steel surgical scalpels: the cutting edge of the blade is only about three ...
A scalpel, lancet, or bistoury is a small and extremely sharp bladed instrument used for surgery, anatomical dissection, podiatry and various handicrafts. A lancet is a double-edged scalpel. Scalpel blades are usually made of hardened and tempered steel, stainless steel, or high carbon steel; in addition, titanium, ceramic, diamond and even ...
A macuahuitl ([maːˈkʷawit͡ɬ]) is a weapon, a wooden club with several embedded obsidian blades. The name is derived from the Nahuatl language and means "hand-wood". [2] Its sides are embedded with prismatic blades traditionally made from obsidian, which is capable of producing an edge sharper than high quality steel razor blades.
19000 year old microblades found at Fukui cave in Japan. Microblade technology is a period of technological microlith development marked by the creation and use of small stone blades, which are produced by chipping silica-rich stones like chert, quartz, or obsidian. Blades are a specialized type of lithic flake that are at least twice as long ...
The most common blade materials are carbon steel, stainless steel, tool steel, and alloy steel. Less common materials in blades include cobalt and titanium alloys, ceramic, obsidian, and plastic. The hardness of steel is usually stated as a number on the Rockwell C scale (HRC). The Rockwell scale is a hardness scale based on the resistance to ...
Morphologically, obsidian was worked into a variety of tool forms, including knives, lance and projectile points, prismatic blades, general bifacial tools, and utilized flakes. Blades have been found in situ with rabbit, rodent, and mollusk remains, indicating their use in butchery. The practical use of obsidian is obvious considering that the ...
Sheffield, South Yorkshire, England [1] Number of employees. Approximately 400 [2] Website. www.swann-morton.com. Swann-Morton Ltd is a British manufacturer of scalpel handles, blades and other surgical equipment based in Sheffield, England. It was founded in 1932 by Walter R. Swann, J. A. Morton and D. Fairweather to make and sell razor blades.
Blade (archaeology) In archaeology, a blade is a type of stone tool created by striking a long narrow flake from a stone core. This process of reducing the stone and producing the blades is called lithic reduction. Archaeologists use this process of flintknapping to analyze blades and observe their technological uses for historical purposes.
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