Knife sharpening is the process of making a knife or similar tool sharp by grinding against a hard, rough surface, typically a stone, or a flexible surface with hard particles, such as sandpaper. Addi
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
Two professional knife sharpeners in streets of Kathmandu
A knife is a tool or weapon with a cutting edge or blade, usually attached to a handle or hilt. One of the earliest tools used by humanity, knives appeared at least 2.5 million years ago, as evidenced
A Bowie knife of pattern-welded steel
Characteristic parts of a knife
Morakniv carbon steel knife
Knife blade mass production