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Illustration of stepwise bronze casting by the lost-wax method. Lost-wax casting – also called investment casting, precision casting, or cire perdue (French: [siʁ pɛʁdy]; borrowed from French) [1] – is the process by which a duplicate sculpture (often a metal, such as silver, gold, brass, or bronze) is cast from an original sculpture.
Produce wax patterns: Although called wax patterns, pattern materials may also include plastic and frozen mercury. [6] Wax patterns can be produced in one of two ways. In one process, the wax is poured into the mould and swished around until an even coating, usually about 3 mm (0.12 in) thick, covers the inner surface of the mould.
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Wax patterns are used in an alternative casting process called investment casting. A combination of paraffin wax, bees wax and carnauba wax is used for this purpose. In this case the wax "pattern" is melted out from the mould cavity which is normally a rigid plaster like material rather than sand, so the wax "pattern" can only be used once. [5]
The first task in the lost wax hollow casting process consists of developing a clay core which is roughly the shape of the final cast image. Next, the clay core is covered by a layer of wax composed of pure beeswax, resin from the tree Damara orientalis (more properly Agathis dammara), and nut oil. The wax is then shaped and carved in all its ...
The sculpture was made using the ancient lost-wax casting method. In this method, the sculptor makes a full-size model of the sculpture in wax. From the wax, a plaster cast is then made, and the wax is melted out. Then, molten bronze is poured into the mold, and it assumes the shape of the wax.
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The lost wax technique. The Victorious Youth, also known as the Atleta di Fano, the Lisippo di Fano or the Getty Bronze, is a Greek bronze sculpture, made between 300 and 100 BCE, [1] in the collections of the J. Paul Getty Museum, displayed at the Getty Villa in Pacific Palisades, California.