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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. Intricate works can be achieved by this method.
Casting is most often used for making complex shapes that would be difficult or uneconomical to make by other methods. [1] Casting processes have been known for thousands of years, and have been widely used for sculpture (especially in bronze), jewelry in precious metals, and weapons and tools.
Bronze is widely used for casting bronze sculptures. Common bronze alloys have the unusual and desirable property of expanding slightly just before they set, thus filling the finest details of a mould. Then, as the bronze cools, it shrinks a little, making it easier to separate from the mould. [30]
Inlet-outlet cover of a valve for a nuclear power station produced using investment casting. Investment casting is an industrial process based on lost-wax casting, one of the oldest known metal-forming techniques. [1] The term "lost-wax casting" can also refer to modern investment casting processes.
Their tradition holds that he taught the Benin metal workers the art of casting bronze using lost-wax techniques during the thirteenth century. [103] These Benin artisans refined that technique until they were able to cast plaques only an eighth-of-an-inch (3 mm) thick, surpassing the art as practiced by Renaissance masters in Europe. [92] [104]
In 1893 a replica of the statue was cast in bronze and donated to the city of Providence by the Elmwood Association. [29] The statue was removed in June 2020. [30] In 1896, its casting of W. Granville Hastings bust, Judge Carpenter was the first in America using the lost-wax casting method. The foundry went on to become one of the leading art ...
Centrifugal casting, or centrifuging, [1] is used as a means of casting small, detailed parts or jewelry. [2] An articulated arm is free to spin around a vertical axle, which is driven by an electric motor or a spring. The entire mechanism is enclosed in a tub or drum to contain hot metal should the mold break or an excess of metal be used.
French ormolu mantel clock (around 1800) by Julien Béliard (1758 – died after 1806), Paris.The clock case by Claude Galle (1758–1815) Ormolu (/ ˈ ɔːr m ə ˌ l uː /; from French or moulu 'ground/pounded gold') is the gilding technique of applying finely ground, high-carat gold–mercury amalgam to an object of bronze, and objects finished in this way.