Devcon 2 Ton Epoxy is a clear, extremely strong, non-shrinking adhesive, specially formulated for high-clarity and good impact strength. Only mix the amount of resin and hardener together that can be used within the handling time. You can mix colored chalk with epoxy to repair enamel and china that has been nicked, and also color pigment concentrate. This must be done after the resin and hardener have been thoroughly mixed together. It is good to use removable tape on any area that you do not want epoxy to get on. Remove the tape before the epoxy cures. This waterproof formula bonds acrylic, china, fiberglass, metal, wood, concrete, ceramic, and glass with a tensile strength of 2500 PSI. Temperature Range: -40 degrees Fahrenheit to 200 degrees Fahrenheit.