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Plaster expands while hardening then contracts slightly just before hardening completely. This makes plaster excellent for use in molds, and it is often used as an artistic material for casting. Plaster is also commonly spread over an armature (form), made of wire mesh, cloth, or other materials; a process for adding raised details.
Various sized cuts of 1 ⁄ 2 in (13 mm) drywall with tools for maintenance and installation . Drywall (also called plasterboard, dry lining, [1] wallboard, sheet rock, gib board, gypsum board, buster board, turtles board, slap board, custard board, gypsum panel and gyprock) is a panel made of calcium sulfate dihydrate (), with or without additives, typically extruded between thick sheets of ...
Universal began in a multi-story Chicago Ave. where they made mostly plaster/chalkware products. In the 1950s they moved to a new second single story building located on Ogden Ave., where they began working with experimental composites.
In 1909, Avery led the USG acquisition of the Sackett Plaster Board Company, [13] inventor of Sackett Board, which was a panel made of multiple layers of plaster and paper. Patented by USG in 1912, a new manufacturing process produced boards with a single layer of plaster and paper that could be joined flush along a wall with a relatively ...
Detail of a cornice moulded in staff, Manufactures and Liberal Arts Building at the Chicago World's Columbian Exposition, 1893. Staff is a kind of artificial stone used for covering and ornamenting temporary buildings. Facade of the Fisheries Building, World's Columbian Exposition. Three pillared archways are constructed and finished, in front ...
Manila hemp fiber has been used as a substitute for hair. Plaster for hair slabs made with manila hemp fiber broke at 195 pounds (88 kg), plaster mixed with sisal hemp at 150 pounds (68 kg), jute at 145 pounds (66 kg), and goats' hair at 144 pounds (65 kg). [citation needed] Another test was made in the following manner. Two barrels of mortar ...
Lath and plaster is a building process used to finish mainly interior dividing walls and ceilings. It consists of narrow strips of wood ( laths ) which are nailed horizontally across the wall studs or ceiling joists and then coated in plaster .
A stereotype mold ("flong") being made Stereotype casting room of the Seattle Daily Times, c. 1900. In printing, a stereotype, [note 1] stereoplate or simply a stereo, is a solid plate of type metal, cast from a papier-mâché or plaster mould taken from the surface of a forme of type. [1]: stereotype The mould was known as a flong. [note 2]