......The silicon mold is injected with hot wax from a wax pot. The wax comes out of a tube and is pushed into the rubber mold. Once the wax has cooled, the mold is opened to reveal a wax replica of the original metal piece. Several wax replicas will be made and added to a wax tree. The pieces are carefully attached to the branches of wax, which converge in a common trunk. The wax tree is inserted into a cylindrical flask, which is filled with a cementing mixture called investment. A vacuum is used to insure there are no bubbles in the investment. Once the investment has gone off and hardened, it is put into the oven and the wax is burned out leaving a negative of it's form in the hardened investment.
The flask is kept in the oven until we are ready to cast. The metal is heated in a crucible with a torch until it is red hot and melts. It is poured into the flask through the trunk of what was the wax tree (upside down) before it evaporated. A vacuum system is used again to insure there are no bubbles in the metal. The flask is then dipped into a bucket of water. The investment loosens and settles to the bottom of the bucket of water. What is left is what was the wax tree and is now a metal tree of whatever metal was cast. The metal is allowed to cool. The pieces are then clipped off the metal tree and rough ground to get the sharp parts off. They are then put through a series of tumblers that achieve the polishing process......
The flask is kept in the oven until we are ready to cast. The metal is heated in a crucible with a torch until it is red hot and melts. It is poured into the flask through the trunk of what was the wax tree (upside down) before it evaporated. A vacuum system is used again to insure there are no bubbles in the metal. The flask is then dipped into a bucket of water. The investment loosens and settles to the bottom of the bucket of water. What is left is what was the wax tree and is now a metal tree of whatever metal was cast. The metal is allowed to cool. The pieces are then clipped off the metal tree and rough ground to get the sharp parts off. They are then put through a series of tumblers that achieve the polishing process......
