HOW THE INVESTMENT CASTING PROCESS WORKS?

In investment casting, a shape is formed (usually out of wax) and placed inside a metal cylinder called a flask. Wet plaster is poured into the cylinder around the wax shape. After the plaster has hardened, the cylinder containing the wax pattern and plaster is placed in a kiln and is heated until the wax has fully vaporized. After the wax has fully burnt-out, the flask is removed from the oven, and molten metal is poured into the cavity left by the wax. When the metal has cooled, plaster is chipped away, and the metal casting is revealed.
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