Once the design has been approved, we carve a wax to exact proportions. The wax is placed into a rubber base, then a metal flask is added. When it is dry, it is placed into a kiln, and the wax is slowly melted out leaving a cavity for the metal to fill. The investment is heated to approximately 1300 degrees and held there for several hours. The flask is removed from the kiln and placed into either the centrifical caster or the vacuum caster.
Gold is melted using a torch that is fueled by natural gas and oxygen.
When it reaches the proper temperature of 1650 degrees to 1750 degrees, it is then spun or vacuumed into the cavity. The flask then is plunged into water. The investment is still very hot and it reacts by boiling away, thus releasing the gold. The remaining investment is then scrubbed off and the finishing process begins. There are several hours of cutting, filing, sanding, buffing and polishing.