Talk Composites - The Forum for Advanced Composites

mold and release system

http://www.talkcomposites.com/Topic5016.aspx

By tha_pop - 2/21/2013 12:10:48 PM

quick question for you guys. What resin/gelcoat system are you using on your made of polyester gelcoat? i have made a mold for a mirror part using polyester system but the problem i'm having is that i'm using epoxy for the infusion and my part always get stuck on the mold no matter how much i wax the mold. with the last part i puller from the same mold i applied pva and again there was a bit if sticking but the finishing on the part was not that great

what are you using for ur release system maybe if you could outline the product and the steps it will be really great.

thanks in advance.
By ajb100 - 2/22/2013 10:30:12 AM

Uni mould is good but exPensive for one off's

With my polyester moulds, I leave them for a week befor eyeing and then a couple of coats of easy lease and a couple of coats of wax and they normally release fine, sometimes need to do a little bit of repair to the gel coat but nothing major