Has anyone got experience of making fiberglass molds for car bodywork? As I still like to track my car I would like to safe guard my bodywork and not have to buy parts twice if I have an off. The molds would be kept in the attic until the time came for the original parts to be replaced, but this could be years, would the molds last, since they wouldn't be used they shouldn't loose much shape if stored in a decent geometry?