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The fragile wax patterns must withstand forces encountered during the mould making. 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.
Contents. Lost-wax casting. 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 ...
Pattern (casting) The top and bottom halves of a sand casting mould showing the cavity prepared by patterns. Cores to accommodate holes can be seen in the bottom half of the mould, which is called the drag. The top half of the mould is called the cope. In casting, a pattern is a replica of the object to be cast, used to form the sand mould ...
Dhokra (also spelt Dokra) is non–ferrous metal casting using the lost-wax casting technique. This sort of metal casting has been used in India for over 4,000 years and is still used. One of the earliest known lost wax artefacts is the dancing girl of Mohenjo-daro. [ 1 ] The product of dhokra artisans are in great demand in domestic and ...
Lost-foam casting is a type of evaporative-pattern casting process that is similar to investment casting except foam is used for the pattern instead of wax. This process takes advantage of the low boiling point of foam to simplify the investment casting process by removing the need to melt the wax out of the mold.
Muisca raft. The Muisca raft (Balsa Muisca in Spanish), sometimes referred to as the Golden Raft of El Dorado, is a pre-Columbian votive piece created by the Muisca, an indigenous people of Colombia in the Eastern Ranges of the Colombian Andes. The piece probably refers to the gold offering ceremony described in the legend of El Dorado, which ...
The metal pieces were made using lost-wax casting and are considered among the best sculptures made using this technique. [21] Benin began to trade ivory, pepper, and slaves [ 22 ] with the Portuguese in the late 15th century and incorporate the use of manillas (brass ingots in the form of bracelets, bought from the Portuguese) as a metal ...
Lost-foam casting. Lost-foam casting (LFC) is a type of evaporative-pattern casting process that is similar to investment casting except foam is used for the pattern instead of wax. This process takes advantage of the low boiling point of polymer foams to simplify the investment casting process by removing the need to melt the wax out of the mold.
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