Rio Grande Single Vented Aluminum Mold Frame

This Rio Grande aluminum mold frame holds a single mold and a vented design allows excess rubber to escape, preventing model deformation when using natural 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.