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2. Knife sharpening - Wikipedia

   en.wikipedia.org/wiki/Knife_sharpening

   Knife sharpener in Kabul, Afghanistan (1961) The Knife Grinder by Massimiliano Soldani (c.1700), Albertinum, Dresden 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 ...

3. Sharpening jig - Wikipedia

   en.wikipedia.org/wiki/Sharpening_jig

   A sharpening jig is often used when sharpening woodworking tools. Many of the tools used in woodworking have steel blades which are sharpened to a fine edge. A cutting edge is created on the blade at the point at which two surfaces of the blade meet. To create this cutting edge a bevel is formed on the blade, usually by grinding.

4. 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]

5. Grinding machine - Wikipedia

   en.wikipedia.org/wiki/Grinding_machine

   It can also be used to make and sharpen metal stamping die sets, flat shear blades, fixture bases or any flat and parallel surfaces. Surface grinders can be manually operated or have CNC controls. Tool and cutter grinder, which usually can perform the minor function of the drill bit grinder or other specialist toolroom grinding operations.

6. Sharpening - Wikipedia

   en.wikipedia.org/wiki/Sharpening

   A roadside knife grinder on rue Faidherbe (11e arrondissement) in Paris. He is one of the few knife grinders who still practise in France. Sharpening tools. A number of blade sharpeners operate a mobile business, [1] [2] traveling to their customers locations, often in highly equipped vehicles. Less common in developed nations.

7. Sharpening stone - Wikipedia

   en.wikipedia.org/wiki/Sharpening_stone

   Sharpening stones, or whetstones, [1] 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 ...