Fiberglass - A Decision

I've decided to start with the 3M resin (which I'm now thinking is polyester) I can buy locally to reinforce my leg castings. It'll be cheaper than ordering an epoxy resin and I can get my hands on it much quicker. For my final pull I may order a small epoxy kit just to test it and compare the results with the polyester. For now, I'm going to practice with the polyester.