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A cold chisel is a tool made of tempered steel used for cutting 'cold' metals, [2] meaning that they are not used in conjunction with heating torches, forges, etc. Cold chisels are used to remove waste metal when a very smooth finish is not required or when the work cannot be done easily with other tools, such as a hacksaw, file, bench shears ...
Bronze weapon from the Mesara Plain, Crete. Copper came into use in the Aegean area near the end of the predynastic age of Egypt about 3500 BC. The earliest known implement is a flat celt, which was found on a Neolithic house-floor in the central court of the palace of Knossos in Crete, and is regarded as an Egyptian product.
[2] [4] [9] One pre Hispanic technique was to hammer metal flat, punch out a design and then layer this design over wood or leather, often used on shields. [9] Silver was less used in the pre Hispanic period as it was less valued as tribute. It did not have the same divine symbolic value that gold did. [7]
A "liner" has a flattened tip with a slightly curved blunt edge. It is used to chase narrow grooves in the metal, or to repoussé narrow ridges from the back side; both for outlining the work, and to refine edges in the final object. A "planisher" has a smooth, flat tip meant for pushing out large, flat areas of metal.
The burin consists of a rounded handle shaped like a mushroom, and a tempered steel shaft coming from the handle at an angle and ending in a very sharp cutting face, creating a "V"-shaped groove in a printing plate of soft metal, classically copper. [5] The most ubiquitous types have a square or lozenge face, but there are many others.
Other terms often used for printed engravings are copper engraving, copper-plate engraving or line engraving. Steel engraving is the same technique, on steel or steel-faced plates, and was mostly used for banknotes, illustrations for books, magazines and reproductive prints, letterheads and similar uses from about 1790 to the early 20th century, when the technique became less popular, except ...
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Made from wood or metal, they are typically two-sided, one flat or with slight bumps, and the other with more pronounced protrusions. [1] Their use has been reduced with the invention of cube steak machines and other electric tenderisers, [ citation needed ] but they can still be readily found at cookery stores and in professional use.
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