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A knife (pl.: knives; from Old Norse knifr 'knife, dirk' [1]) 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 by the Oldowan tools.
The term "utility knife" may also refer to small fixed-blade knives used for crafts, model-making and other artisanal projects. These small knives feature light-duty blades best suited for cutting thin, lightweight materials. The small, thin blade and specialized handle permit cuts requiring a high degree of precision and control.
The blades are usually short (less than 3 inches (76 mm)), but both the handle and blades are very wide. Sunfish knives usually have two blades. A small sunfish knife: Toothpick: Elongated knife, with a single narrow clip point blade. Handle has bolsters at both ends, and is turned up or tapered on the opposite end of the blade.
Engraving a knife. Knife making is the process of manufacturing a knife by any one or a combination of processes: stock removal, forging to shape, welded lamination or investment cast. [1] Typical metals used come from the carbon steel, tool, or stainless steel families. Primitive knives have been made from bronze, copper, brass, iron, obsidian ...
An OTF Knife, also known as an out-the-front knife, sliding knife, telescoping knife, or angel blade, is a pocketknife with a blade that opens and closes through a hole in one end of the handle. This design contrasts with the majority of utility knives, which are either standard folding knives or are "fixed blade" sheath knives (having no ...
A pushknife or wood splitting knife is a similar tool, used by pushing, rather than pulling. [5] An inshave is a similar tool with a blade curved out to the side between the two handles. It is used to shave wood to form a hollowed out surface, such as the top of a chair seat. It is also called a scorp. There are also versions with a single handle.
With the Iñupiat style ulu, the blade has a centre piece cut out and both ends of the blade fit into the handle. [24] In Canada, the blade more often is attached to the handle by a single stem in the centre. In the western areas of the Canadian Arctic, the blade of the ulu tends to be of a triangular shape, while in the eastern Arctic, the ...
A variety of blade materials can be used to make the blade of a knife or other simple edged hand tool or weapon, such as a sickle, hatchet, or sword. The most common blade materials are carbon steel, stainless steel, tool steel, and alloy steel. Less common materials in blades include cobalt and titanium alloys, ceramic, obsidian, and plastic.