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investment casting

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noun Metallurgy.
  1. a casting process in which an expendable pattern is surrounded by an investment compound and then baked so that the investment is hardened to form a mold and the pattern material may be melted and run off.
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Origin of investment casting

First recorded in 1945–50
Also called precision casting.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018