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After the silicone cures, the half-molded piece is taken out of the box, and the dam is removed from it. Then a box is rebuilt around it, release agent is applied to the silicone, and the other half of the mold is poured. In this picture both arm molds are shown after pouring. The arm is completely encased in rubber, except for an access point where resin will be poured into the mold.