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Investment casting is a process that begins with a wax pattern, which is a replica of the final product. This wax pattern is coated with a refractory ceramic material to create a mold. After the coating hardens, the mold is heated to melt and remove the wax pattern, leaving a hollow ceramic shell. Molten metal is then poured into this shell, where it solidifies and takes the shape of the original wax pattern. Once the metal has cooled, the ceramic shell is broken away to reveal the finished component.