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Jeff Lewis
01-19-2006, 06:50 AM
I am installing a preformed fiberglass header panel in a 41 truck. It generally fit pretty nicely except for a 6 in section which has a slight bow in it. I can force the fiberglass into place to attach the screw to hold it but it seems to put a lot of stress on the fiberglass. Is it possible to apply heat to this section of the header panel to get it to "relax" closer to the position that I need it? Or will the fiberglass baturally relax over time after being screwed down?I can attach a pic if needed. Thanks.

Harry Phinney
01-19-2006, 04:49 PM
It's unlikely that heating it will do you any real good. Fiberglass is most often made using thermosetting resins (generally polyesters or epoxies), as opposed to thermoplastics like polystyrene or polypropylene. A thermoplastic will soften and eventually melt (i.e. liquify) with heat, but a thermoset plastic will not. A thermoset plastic will char and eventually burn at elevated temperatures, but will not soften and liquify like a thermoplastic.

Harry Phinney