Mold Mix 7

Luminar Mold Mix 7 is a refractory-molding compound designed to allow the replication of three-dimensional objects in glass and bronze.  Mold Mix 7 is sold as a powder and is prepared for use by mixing thoroughly with water until a paste like consistency is achieved.  This paste can then be formed into the desired shape and dried before use.  Properly prepared molds of Mold Mix 7 will resolve the finest details and possess good strength. Mold Mix 7 remains sufficiently friable to permit easy removal after annealing. Mold Mix 7 is highly resistant to reaction with hot glass and gives the fired work a high-quality surface free of-hazing common to investment type molds.  Mold Mix 7 is composed of high strength alumina fibers and alumina powders.   Mold Mix 7 is ideal for use up 1550°C (2822°F) and above.  It will air dry within 48 hours at room temperature or can be force dried with heat. When dried and fired to temperatures above 300°C (572°F), molds made with Mold Mix 7 gain strength and resiliency.