Stop in for a cup of coffee

dukeboy_318 said
Yes, mold release. Releasing wasnt the problem. It released fine but the mold fell apart once the frame was out. I think it was too thin to support its own weight

The guy who built my custom '69 Charger fiberglass fascia for my '06 Charger uses chopped fiberglass to make his molds. Plaster doesn't work for large pieces. This guy also makes the big front faces for the "Thomas the Tank Engine" trains. I can give you his whole technique if you'd like.