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  2. Sharpness (cutting) - Wikipedia

    en.wikipedia.org/wiki/Sharpness_(cutting)

    Sharpened metal drop-point blade Naturally occurring sharp obsidian piece Shark tooth with a sharp, serrated edge A sewing needle comes to a sharp point. Sharpness refers to the ability of a blade, point, or cutting implement to cut through materials with minimal force, and can more specifically be defined as the capacity of a surface to initiate the cut. [1]

  3. Glass knife - Wikipedia

    en.wikipedia.org/wiki/Glass_knife

    This extends the life of the diamond blade which is used only when its superior performance is critical. [citation needed] Obsidian, a naturally occurring volcanic glass, is used to make extremely sharp surgical scalpels, significantly sharper than is possible with steel. The blades are brittle and very easily broken.

  4. Knife sharpening - Wikipedia

    en.wikipedia.org/wiki/Knife_sharpening

    Coarse diamond sharpening stones can be used for flattening waterstones. [8] [9]) Alternatively, tungsten carbide blades can be used in knife sharpening. A clamp-on knife sharpener. The rod guides the sharpening stone to maintain a consistent angle. The angle can be adjusted by moving the guide posts up or down.

  5. List of blade materials - Wikipedia

    en.wikipedia.org/wiki/List_of_blade_materials

    A variety of blade materials can be used to make the blade of a knife or other simple edged hand tool or weapon, such as a sickle, hatchet, or sword. 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.

  6. Sharpening stone - Wikipedia

    en.wikipedia.org/wiki/Sharpening_stone

    The term is based on the word "whet", which means to sharpen a blade, [3] [4] not on the word "wet". The verb nowadays to describe the process of using a sharpening stone for a knife is simply to sharpen, but the older term to whet is still sometimes used, though so rare in this sense that it is no longer mentioned in, for example, the Oxford Living Dictionaries.

  7. Prismatic blade - Wikipedia

    en.wikipedia.org/wiki/Prismatic_blade

    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 ...

  8. How Often Should You Sharpen Your Lawn Mower Blades? 10 ... - AOL

    www.aol.com/lifestyle/often-sharpen-lawn-mower...

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  9. Blade - Wikipedia

    en.wikipedia.org/wiki/Blade

    The bare blade of a Japanese sword without the handle or hilt. A blade is the sharp, cutting portion of a tool, weapon, or machine, specifically designed to puncture, chop, slice, or scrape surfaces or materials. Blades are typically made from materials that are harder than those they are intended to cut.

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