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The ceramic shell process is a lost wax process. The original sculpture is made from wax and invested (or covered) in a layer of a ceramic like material. The mold is placed in a burnout kiln and heated quickly to 1500°F. During this process the wax melts out leavig a negative space in the mold the exact shape of the original wax. The mold is then checked for cracks and patched if necessary, and then once more placed in the burnout kiln to be heated up to 1100°F ready for bronze to be poured in.
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