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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.
Wax is used to verify that something such as a document is unopened, to verify the sender's identity (for example with a seal stamp or signet ring), and as decoration. Sealing wax can also be used to take impressions of other seals. Wax was used to seal letters close and later, from about the 16th century, envelopes.
The wax used within the thermostat is specially manufactured for the purpose. Unlike a standard paraffin wax, which has a relatively wide range of carbon chain lengths, a wax used in the thermostat application has a very narrow range of carbon molecule chains. The extent of the chains is usually determined by the melting characteristics ...
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Wax bullets can be easily constructed by using a cartridge case to punch a cylinder out of a sheet of paraffin wax, and then priming the cartridge using normal handloading equipment. The optional addition of beeswax and/or grease will produce a softer, more flexible bullet than pure paraffin.
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