Sun Cure Epoxy resin filler is easy to use and works on polyester and epoxy boards. Sun Cure Fiberfill Epoxy is used straight from the tube, no mixing or adding cloth needed... just apply in shade, tape coversheet over repair, then press firmly and expose to the sun!!! The new Sun Cure epoxy fiber filler kit comes with 1oz. SC Epoxy Fiber filler resin, stir sticks, sandpaper, and a mylar sheet. A faster method for repairing all types of surfboards plus it provides a permanent repair making repairing your epoxy surfboard easy!