How To Vent a Silicone Mold to Eliminate Bubbles In Casting

To begin this step, sharpen the end of a brass tube with an exacto knife. Then, carefully punch the brass tube through a pre-selected point on the top half of the mold. This point should be over the highest points in the top half of the mold. Continue to slowly force the brass tube through the rubber until it comes through the opposite side. A core of Mold Max® XLS will be removed as a result of the brass tube punching through.