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Photochemical machining (PCM), also known as photochemical milling or photo etching, is a chemical milling process used to fabricate sheet metal components using a photoresist and etchants to corrosively machine away selected areas. This process emerged in the 1960s as an offshoot of the printed circuit board industry.
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Chemical milling or industrial etching is the subtractive manufacturing process of using baths of temperature-regulated etching chemicals to remove material to create an object with the desired shape. [1] [2] Other names for chemical etching include photo etching, chemical etching, photo chemical etching and photochemical machining. It is ...
Photogravure registers a wide variety of tones, through the transfer of etching ink from an etched copper plate to special dampened paper run through an etching press. The unique tonal range comes from photogravure's variable depth of etch, that is, the shadows are etched many times deeper than the highlights.
Etching is a printmaking technique in art. Etching may also refer to: Etching (microfabrication), a process in producing microelectronics; Glass etching, a glass decoration technique; Chemical milling, or industrial etching; Photochemical machining, or photo etching
Lorna Simpson was born on August 13, 1960, and grew up in Queens and Brooklyn, New York. [5] [2] Her parents, a Jamaican-Cuban father and African-American mother, [6] [7] took her to numerous plays, museums, concerts and dance performances as a child. [8]
James Hughlette Wheeler (April 24, 1901 – December 12, 1954) also known as "Tex" Wheeler, was an American sculptor renowned for his lifelike depictions of cowboys, cattlemen, and horses.
However, from 1880 to 1950 a photo-mechanical ("line-block") variant was the dominant form of commercial printing for images. A similar process to etching, but printed as a relief print, so it is the "white" background areas which are exposed to the acid, and the areas to print "black" which are covered with ground. Blake's exact technique ...
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