Just as the name suggests, this is a two part epoxy clay. We’ve had excellent results repairing the epidermis on African mammals, repairing horns, rebuilding foot pads, and eye and nostril finishing. With a 1:1 mix ratio, set time is approximately one hour and hardens like a rock. Does not crack and cleans up with soap and water. Use anywhere a flat (non-shiney) surface is desired.