Rio Grande Single Unvented Aluminum Mold Frame

This Rio Grande aluminum mold frame holds a single mold and is unvented, specifically designed to work with silicone rubber. The frame accommodates 1/8" sprue rods. Rio Grande mold frames are made from solid aluminum bar stock that resists warping even after repeated heating and cooling. Carefully machined within tight tolerances, these frames feature precision milled openings with smooth, parallel walls.