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2. Knife sharpening - Wikipedia

   en.wikipedia.org/wiki/Knife_sharpening

   A railway camp cook sharpens a knife blade on a stone wheel, 1927. Knife sharpening is the process of making a knife or similar tool sharp by grinding against a hard, rough surface, typically a stone, [1] or a flexible surface with hard particles, such as sandpaper. Additionally, a leather razor strop, or strop, is often used to straighten and ...

3. Sharpening stone - Wikipedia

   en.wikipedia.org/wiki/Sharpening_stone

   Sharpening stones, or whetstones, are used to sharpen the edges of steel tools such as knives through grinding and honing. Such stones come in a wide range of shapes, sizes, and material compositions. They may be flat, for working flat edges, or shaped for more complex edges, such as those associated with some wood carving or woodturning tools.

4. Straight razor - Wikipedia

   en.wikipedia.org/wiki/Straight_razor

   Razor handling while honing on a whetstone. Sharpening is the final stage in the process. At first the blade is sharpened on a grinding wheel. Following that the blade can be honed by holding the blades against the flat side of rotating round stones, or by drawing the blade across stationary flat stones. The cutting edge is finished using a ...

5. Novaculite - Wikipedia

   en.wikipedia.org/wiki/Novaculite

   Novaculite, also called Arkansas Stone, is a microcrystalline to cryptocrystalline rock type that consists of silica in the form of chert or flint. It is commonly white to grey or black in color, with a specific gravity that ranges from 2.2 to 2.5. It is used in the production of sharpening stones. It occurs in parts of Arkansas, Oklahoma, and ...

6. Chronic wasting disease - Wikipedia

   en.wikipedia.org/wiki/Chronic_wasting_disease

   Chronic wasting disease (CWD), sometimes called zombie deer disease, is a transmissible spongiform encephalopathy (TSE) affecting deer.TSEs are a family of diseases thought to be caused by misfolded proteins called prions and include similar diseases such as BSE (mad cow disease) in cattle, Creutzfeldt–Jakob disease (CJD) in humans and scrapie in sheep. [2]

7. Lithic reduction - Wikipedia

   en.wikipedia.org/wiki/Lithic_reduction

   Lithic reduction. The Levallois technique of flint- knapping. In archaeology, in particular of the Stone Age, lithic reduction is the process of fashioning stones or rocks from their natural state into tools or weapons by removing some parts. It has been intensely studied and many archaeological industries are identified almost entirely by the ...