Hey all you out there in Fett land, I'm kinda new to the scratch builds and I was hoping for some info. This is mainly about making molds and castings. What happens to the "master/original" after you take the mold. Is it still a good piece or is it usually damaged removing the mold? Also where are the best places to obtain supplies and also a good place for info on doing this. I know my questions is probably pretty vague but I'm hoping to pull some casts of a helmet. Silicone,fiberglass,resin etc.. not sure which to use and Pros and Cons of them. Thanks..