I've heard its a great product but I had troubles with my specific application (urethane to urethane).
UMR (All Purpose Paintable Mold Release) offers the best release interface for rubber to rubber, rubber to resin, or resin to resin pieces. UMR also allows resin to be painted without requiring a wash post-cure.
- It’s recommended to use UMR in combination with Rubber to Rubber mold release or petroleum jelly when creating multiple-piece molds with High Strength 1, 2, and 3.
Prior to using product, please read all Technical Data, Safety Data, and Instruction sheets linked below.