R&R GLASS-CAST 400 is a stronger, economical mold material. This product has been used successfully in Europe for over 5 years. R&R GLASS-CAST 400 provides added strength for the glass artist that struggles with mold integrity due to mold size or process intensity. Packaged in a 50 pound carton.
Posted by Mary Colm on 7th Apr 2015
No breakage- one thick coat is all that's needed. This product is great for kiln cast glass.