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André Galle (27 May 1761, Saint-Étienne – 21 December 1844, Paris) was a French engraver and medallist. In 1829, he patented a type of roller chain, known as a leaf chain, which is still used for low-speed, heavy duty applications. [1] It was not put into production during his lifetime.
Laser engraving metal plates are manufactured with a finely polished metal, coated with an enamel paint made to be "burned off". At levels of 10 to 30 watts, excellent engravings are made as the enamel is removed quite cleanly. Much laser engraving is sold as exposed brass or silver-coated steel lettering on a black or dark-enamelled background.
A computer numerical control (CNC) router is a computer-controlled cutting machine which typically mounts a hand-held router as a spindle which is used for cutting various materials, such as wood, composites, metals, plastics, glass, and foams.
S. Steel Košice (in Slovakia) – a typical example of a heavy industry factory. Heavy industry is an industry that involves one or more characteristics such as large and heavy products; large and heavy equipment and facilities (such as heavy equipment, large machine tools, huge buildings and large-scale infrastructure); or complex or numerous ...
Drafting pantograph in use Pantograph used for scaling a picture. The red shape is traced and enlarged. Pantograph 3d rendering. A pantograph (from Greek παντ- 'all, every' and γραφ- 'to write', from their original use for copying writing) is a mechanical linkage connected in a manner based on parallelograms so that the movement of one pen, in tracing an image, produces identical ...
Wood engraving of Cole making a wood engraving. He established himself in Chicago, [3] where in the great fire of 1871 he lost everything he possessed. In 1875, he moved to New York City, finding work on the Century (then Scribner's) magazine. [4] [5] [6] Cole was associated with the magazine for 40 years as a pioneer craftsman of wood ...
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