Block casting molds are designed to pour a large cavity which allows a user to create casts that can be cut into multiple pen blanks from mixed acrylic resins (dirty pour flip cup or acrylic swirls), embedding inorganic shredded materials such as US currency or color pencils, or organic materials such as coffee beans, pasta noodles, banksia pods, acorns, or pine cones. As of 2018, all molds come standard in the blue silicone or HDPE molds which work for all resins - polyester, urethane, or epoxy. Pink versions of these molds will only be available while current supplies last.
Mold release sprays help to extend the shelf life of our molds. We recommend Stoner Themoset for Polyester and Epoxy Resins, and Stoner Urethane for Urethane Resin.