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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.
Roman Bronze Works, now operated as Roman Bronze Studios, is a bronze foundry in New York City.Established in 1897 by Riccardo Bertelli, it was the first American foundry to specialize in the lost-wax casting method, [1] and was the country's pre-eminent art foundry during the American Renaissance (ca. 1876–1917).
Much of the wax used in investment casting can be reclaimed and reused. [2] Lost-foam casting is a modern form of investment casting that eliminates certain steps in the process. Investment casting is so named because the process invests (surrounds) the pattern with refractory material to make a mould, and a molten substance is cast into the ...
The earliest known record of lost-wax casting is a clay tablet written in cuneiform in the ancient city of Sparta, Babylon, which specifically records how much wax is needed to cast a key. [6] The earliest-known castings in the global archaeological record were made in open stone molds. [ 7 ]
Although lost-wax casting was never used to make large vessels, it became more and more popular between the late Eastern Zhou and Han dynasties. The lost-wax casting process for casting small parts was more economical than the mould-making process because the amount of metal used was easier to control.
In 2006, Milne created "Knitted Glass", incorporating the techniques of knitting, lost-wax casting, mold-making, and kiln-casting.As Milne describes in, "Knitting wasn't yet cool...": [9] The process involves (A) knitting the original art piece using wax strands, (B) surrounding the wax with a heat-tolerant refractory material, (C ) then removing the wax by melting it out, thus creating a mold ...
There are a wide variety of wax types used in the lost wax casting process. Generally they fall into three main types, soft, hard and injection waxes. Injection waxes are made and intended to be used for injecting wax under pressure into rubber or other types of molds.
Thus, he began using the "lost wax" casting method, which involves carving a piece of wax, casting it, and creating a mold. [5] Using a nail, a screwdriver, and his wax casting method, Robert created "Lady with an Urn," his first professional figurine.