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Photogravure. Photogravure (in French héliogravure) is a process for printing photographs, also sometimes used for reproductive intaglio printmaking. It is a photo-mechanical process whereby a copper plate is grained (adding a pattern to the plate) and then coated with a light-sensitive gelatin tissue which had been exposed to a film positive ...
Photochemical machining. 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.
A print made in 1907 from a photoengraved plate. It reproduces a sketch of Parga's castle made by Ludwig Salvator.. Photoengraving is a process that uses a light-sensitive photoresist applied to the surface to be engraved to create a mask that protects some areas during a subsequent operation which etches, dissolves, or otherwise removes some or all of the material from the unshielded areas of ...
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A high-purity (≥99.9998%) aluminium bar that has been etched to reveal the component crystallites. 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 ...
Many pots and fragments thereof of Pueblo IV period pottery has been found at Pottery Mound a former village along the banks of the Rio Puerco that was inhabited from AD 1350 and 1500. Pottery mound polychrome ware was often slipped with a different color on the inside of the vessel than on the exterior. [ 29 ]
His intaglio images are made by creating grooves and textures below the surface of zinc or copper plates. The techniques he uses most frequently are etching, aquatinting, photo-etching, and watercolour painting. His inspiration and subject matter is from the natural areas around Millbrook, Ontario and the Kawarthas. [3]
Few if any copper sculptures are as large as the Tell al-'Ubaid Lintel, which is 2.59 metres wide and 1.07 metres high. [ 67 ] Many masterpieces have also been found at the Royal Cemetery at Ur (c. 2650 BC), including the two figures of a Ram in a Thicket , the Copper Bull and a bull's head on one of the Lyres of Ur . [ 68 ]
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