Centrifugal Casting Machine Crucibles Crucibles for use with the centrifugal casting machines. Made of fused silica with a clay bond, which will last through many meltings. Best choice for metal melting up to 2500°F (1371°C). 22-450 is 2-1/2 troy (oz.). 22-452 is 12 troy (oz.). 22-453 is 20 troy (oz.). *22-454 is 9 troy (oz.).

*With slot to fit certain Pro-Craft casting machines