A one piece cut block mold is a popular mold making method that has some definite advantages. This time saving technique yields an accurate production mold which also minimizes seam lines. Reduction of seam lines cuts down post finishing of castings and has less impact on detail. Smooth-On silicone rubber compounds cut very evenly and smoothly and are thereby an excellent choice for making a mold of this type. The following shows how to make a one piece cut block mold using silicone rubber and demonstrates how it can be used for casting plastic or a variety of other materials, and how this same mold can be used for a rotocasting application.
