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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. List of blade materials - Wikipedia

   en.wikipedia.org/wiki/List_of_blade_materials

   1095, a popular high-carbon steel for knives; it is harder but more brittle than lower-carbon steels such as 1055, 1060, 1070, and 1080. It has a carbon content of 0.90-1.03% [7] Many older pocket knives and kitchen knives were made of 1095. With a good heat treat, the high carbon 1095 and O-1 tool steels can make excellent knives.

4. Sharpening - Wikipedia

   en.wikipedia.org/wiki/Sharpening

   This means care should be taken when handling these knives as they are susceptible to chipping and breaking. The sporting knife category, including pocket knives, survival knives, and hunting knives, sees more intense action and should be sharpened to the 25° – 30° angle range. The less sharp angle means there is more metal there to cut ...

5. Serrated blade - Wikipedia

   en.wikipedia.org/wiki/Serrated_blade

   A serrated blade has a toothlike rather than a plain edge, and is used on saws and on some knives and scissors. It is also known as a dentated, sawtooth, or toothed blade. Many such blades are scalloped, [1] having edges cut with curved notches, common on wood saws and bread knives. With kitchen knives, the finer serrated edge is found ...

6. Pocketknife - Wikipedia

   en.wikipedia.org/wiki/Pocketknife

   A pocketknife is a knife with one or more blades that fold into the handle. They are also known as jackknives (jack-knife), folding knives, EDC knife, or may be referred to as a penknife, though a penknife may also be a specific kind of pocketknife. [1][2] A typical blade length is 5 to 15 centimetres (2 to 6 in). [3]

7. Jackknifing - Wikipedia

   en.wikipedia.org/wiki/Jackknifing

   Jackknifing is the folding of an articulated vehicle so that it resembles the acute angle of a folding pocket knife. If a vehicle towing a trailer skids, the trailer can push the towing vehicle from behind until it spins the vehicle around and faces backwards. This may be caused by equipment failure, improper braking, or adverse road conditions ...

8. Blade - Wikipedia

   en.wikipedia.org/wiki/Blade

   Blade. 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. This includes early examples made from flaked stones like flint or obsidian, evolving through ...

9. Swiss Army knife - Wikipedia

   en.wikipedia.org/wiki/Swiss_Army_knife

   The Swiss Army Knife was not the first multi-use pocket knife. In 1851, in Moby-Dick (chapter 107), Herman Melville mentions the "Sheffield contrivances, assuming the exterior – though a little swelled – of a common pocket knife; but containing, not only blades of various sizes, but also screw-drivers, cork-screws, tweezers, awls, pens, rulers, nail-filers and countersinkers."