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An artist or mould-maker creates an original model from wax, clay, or another material. Wax and oil-based clay are often preferred because these materials retain their softness. Mouldmaking. A mould is made of the original model or sculpture. The rigid outer moulds contain the softer inner mould, which is the exact negative of the original model.
Fuller's earth. Fuller's earth is a term for various clays used as an absorbent, filter, or bleaching agent. Products labeled fuller's earth typically consist of palygorskite ( attapulgite) or bentonite. [1] Primary modern uses include as absorbents for oil, grease, and animal waste (cat litter), and as a carrier for pesticides and fertilizers.
Sand casting. The cope and drag (top and bottom halves, respectively) of a sand mold, with cores in place on the drag. Two sets of castings (bronze and aluminium) from the above sand mold. Sand casting, also known as sand molded casting, is a metal casting process characterized by using sand — known as casting sand — as the mold material.
Microcrystalline wax. Microcrystalline waxes are a type of wax produced by de-oiling petrolatum, as part of the petroleum refining process. In contrast to the more familiar paraffin wax which contains mostly unbranched alkanes, microcrystalline wax contains a higher percentage of isoparaffinic (branched) hydrocarbons and naphthenic hydrocarbons ...
Articles made from oil-based clays cannot be fired, and thus are not ceramics. Because rising temperature decreases oil viscosity, the malleability is influenced by heating or cooling the clay. Oil-based clay is not water-soluble. As it can be re-used, it is a material commonly used by stop motion animators who need to bend and move their ...
Kerogen is solid, insoluble organic matter in sedimentary rocks. It consists of a variety of organic materials, including dead plants, algae, and other microorganisms, that have been compressed and heated by geological processes. All the kerogen on earth is estimated to contain 10 16 tons of carbon. This makes it the most abundant source of ...
Fruit waxing. Fruit waxing is the process of covering fruits (and, in some cases, vegetables) with artificial waxing material. Natural wax is removed first, usually by washing, followed by a coating of a biological or petroleum derived wax. Potentially allergenic proteins ( peanut, soy, dairy, wheat) may be combined with shellac.
Silicon dioxide, also known as silica, is an oxide of silicon with the chemical formula SiO2, commonly found in nature as quartz. [5] [6] In many parts of the world, silica is the major constituent of sand. Silica is abundant as it comprises several minerals and synthetic products.
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