Hi there! I have a project that requires something stronger, yet smaller in space than ABS or Styrene plastic I have been using to build the proto. I have ordered some 3/4oz fiberglass cloth and some resin kit. I need to build some negative mold before making the fiberglassing, because internal dimensions are more lenient than externals. I want to know if it would be possible to make a fiberglass negative and then apply some coating to prevent the final work from sticking to the mold. Since it will be resin/resin surface, I fear that some regular de-molding wax won't be enough. Also, I have never done fiberglass before, but did my research before jumping into it.