We will use Equinox® 38 Silicone Food Safe Putty to make a mold of a coin that will be used to make chocolate coin castings. Adhere the coin to a base. Then, apply hot melt glue to the back of the coin. Secure the coin to the base by pressing firmly, let the glue dry before proceeding.
Create a support form using scissors and a deli cup. The support form serves to provide reinforcement as you press the putty onto and around the coin. Your mold will be more uniform using a support form, which will in turn yield better castings. Trim the rim from the deli cup to create the support form. Leave about 1/2'' on all sides of the original coin. Secure the support form to the base using hot melt glue.