To fill the entire resin silicone molds, you may need about 42.33 ounces of resin. The silicone resin molds are for craft use only, not suitable for food. Glossy Molds for Resin Casting: Our large silicone molds are made of silicone material, very flexible and easy to release, suitable for casting resin, epoxy resin, but not for coating resin.