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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 ...
During the Early horizon, advances in metal working produced spectacular and characteristic Andean gold objects made by the joining of smaller metal sheets, and also gold-silver alloy appeared. Two traditions seem to have developed alongside each other – one in northern Peru and Ecuador, and another in the Altiplano region of southern Peru ...
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.
A chaser in Tunis using a lightweight chasing hammer and a liner to chase a pattern into a brass mortar. The tools needed for these techniques are [10] A container for the pitch, such as a "pitch tray" for larger plates, or a heavy hemispherical cast iron "pitch bowl" for smaller ones. The bowl can be placed over a sand bag or leather ring, and ...
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Islamic Golden Age brass astrolabe Brass lectern with an eagle. Attributed to Aert van Tricht, Limburg (Netherlands), c. 1500.. Brass is an alloy of copper and zinc, in proportions which can be varied to achieve different colours and mechanical, electrical, acoustic and chemical properties, [1] but copper typically has the larger proportion, generally 2 ⁄ 3 copper and 1 ⁄ 3 zinc.
The metal of lower thermal expansion coefficient is sometimes called the passive metal, while the other is called the active metal. Copper, steel, brass, iron, and nickel are commonly used metals in bimetallic strips. [6] Metal alloys have been used in bimetallic strips as well, such as invar and constantan. Material selection has a significant ...
A bimetal bar is usually made of brass and iron. Shows the principle of non-heated (left) and heated (right) bimetal. Bimetallic strips and disks, which convert a temperature change into mechanical displacement, [1] are the most recognized bimetallic objects due to their name. However, there are other common bimetallic objects.
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