How To Make a Simple Block Mold Using OOMOO™ Silicone


This mold making tutorial video shows how to make a one piece silicone block mold using OOMOO. The finished mold can be used for casting resin, wax, foam, and many other materials. In this video, we cast Smooth-Cast 300 liquid plastic and resin into the finished mold.

OOMOO™ 25 & 30 are easy to use silicone rubber compounds that feature convenient one-to-one by volume mix ratios (no scale necessary). Both have very low viscosity for easy mixing and pouring, and vacuum degassing is usually not necessary. Both products cures at room temperature with negligible shrinkage and have good tear strength. 
OOMOO™ 30 has a 30-minute pot life, with a six-hour cure time. OOMOO™ 25 is a faster version, with a 15-minute pot life and 75 minute cure time. OOMOO™ 25 & 30 are suitable for a variety of art-related and industrial applications including making molds for sculpture and prototype reproduction, casting plaster, resins and wax.