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Técpatl (18th day sign of the Aztec calendar) (Image from the Codex Magliabechiano). In the Aztec culture, a tecpatl was a flint or obsidian knife with a lanceolate figure and double-edged blade, with elongated ends.
Obsidian used in ceramic vessels has been found at Aztec sites. Obsidian cutting knives, sickles, scrapers, drills, razors, and arrow points have also been found. [19] Several obsidian mines were close to the Aztec civilizations in the Valley of Mexico as well as in the mountains north of the valley. [20]
Many knife manufacturers use versions of Asus6-10, Asus440a, and Asus440c, which also are all Aicihi steel. Many were modified to name others, sometimes such as molybdenum vanadium steel. AL-158; BRD4416 stainless steel; X55CrMoV14 or 1.4110 Swiss Army knife Inox blade steel used by Victorinox. 80CrV2 is commonly known as Swedish Saw Steel.
Obsidian can be used to make extremely sharp knives, and obsidian blades are a type of glass knife made using naturally occurring obsidian instead of manufactured glass. 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. [61]
Prismatic blades are flaked from stone cores through pressure flaking or direct percussion. [2] This process results in a very standardized finished tool and waste assemblage. The most famous and most prevalent prismatic blade material is obsidian, as obsidian use was widespread in Mesoamerica, though chert, flint, and chalcedony blades are not ...
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 ...