Lost Wax Casting

At Au, the ancient practice of lost wax casting is used to create a variety of pieces, from simple to extraordinarily complex designs. We feel it’s of paramount importance to match the piece to the most effective method of casting. We offer four different methods of lost wax casting.

1) Low Temperature: Gold, silver, and bronze are cast at relatively low temperatures (1,500° to 2,100°F). A gypsum-bonded investment is used to cast. The melted metals are gravity-poured with a vacuum assist and pressure over pour.

2) High Temperature: Platinum, palladium, and stainless steel are cast at higher temperatures (2,200° to 3,800°F). A phosphate-bonded investment is used to cast. The melted metals are centrifugally-poured under a vacuum with the ability to use a cover gas or back fill.

3) Bi-metal: Bi-metal casting, also known as co-casting, is used when the piece requires two or more metals to be joined. Depending on the metals, low or high temperature casting can produce any desired shape. Unlike other techniques, our bi-metal castings significantly reduce the visibility of any seams that can tarnish or oxidize.

4) Shell Casting:  At Au, we also employ a proprietary shell casting method. This unique technique can be used with every type of metal, including nickel chromium alloys.

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Co-Casting
Avoiding Platinum Contamination
Platinum Do’s and Dont’s For Wax Model Preparation