Wax Design Issues

The main cause of failed casting in our shop is included investment. The principle cause of included investment is the design of the wax. Included investment occurs when a piece of investment breaks off and floats in the molten metal. This is usually caused by holes, slots or sharp angles in the wax that leave fragile pins or blades of investment, after the wax is burned out. These fragile pieces of investment can break off when hit by fast-moving, molten metal.
Ring Holes - Artistry Of Gold

Bottom Holes

Pre-drilled pave holes and holes for bracelet hinges create pins of investment that can break if they are too thin in relation to their diameter.

Through Holes

Through Holes - Artistry Of Gold
Artistry of Gold     •     635 S. Hill Street, Suite 709-710     •     Los Angeles, CA 90014     •     213.688.0113