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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. Knife sharpening - Wikipedia

   en.wikipedia.org/wiki/Knife_sharpening

   A sharp blade will have a distinct edge, like a corner, and may sing slightly from vibration, while a dull blade will have a round edge and the thumb will slip over it. A blade's sharpness may be tested by checking if it "bites"—begins to cut by being drawn across an object without pressure .

4. List of blade materials - Wikipedia

   en.wikipedia.org/wiki/List_of_blade_materials

   The blade is made of non-rustproof carbon steel, blue-plastered by hand and finely forged from the base to the tip of the knife. The 90 mm (3.5 in) long blade shows patina (dark spots) caused by decades of use. It can easily be sharpened to a shaving sharp edge. Carbon steel is a popular choice for rough-use knives and cheaper options.

5. Sharpening - Wikipedia

   en.wikipedia.org/wiki/Sharpening

   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. Still very common in many areas of the world, skilled craftsmen provide a roadside sharpening service for kitchen knives and cleavers, scissors, and sometimes other blades.

6. Diamond knife - Wikipedia

   en.wikipedia.org/wiki/Diamond_knife

   Diamond knife blade. A diamond knife is a very sharp knife in which the edge is made from diamond, invented by Humberto Fernández-Morán in 1955. [1] [2] Diamond knives are used for medical and scientific applications where an extremely sharp and long-lasting edge is essential. The knives are very expensive to purchase, depending on the ...

7. Kitchen knife - Wikipedia

   en.wikipedia.org/wiki/Kitchen_knife

   A selection of various knife types found in a domestic kitchen. A kitchen knife is any knife that is intended to be used in food preparation.While much of this work can be accomplished with a few general-purpose knives — notably a large chef's knife and a smaller serrated blade utility knife — there are also many specialized knives that are designed for specific tasks such as a tough ...