I use Frekote 770NC mold release on my composites that I mold. Basically, if it is applied and let dry properly (NOTHING WILL STICK TO IT)! Basically it is similar in theory of the RainX product but it is a very good mold release. You can use it on silicone, steel, plastic etc. etc… Has anyone every tried to use Frekote 770NC or some other type of professional grade “mold release”?