Talk Composites - The Forum for Advanced Composites

Problem releasing E C Fibreglass polyester gel coat from Unimold

http://www.talkcomposites.com/Topic13512.aspx

By Bonobo - 10/31/2014 11:09:07 AM

Hi,

I made my mould using the unimold system starting with black tooling gel coat, after polishing the mould I applied 5 coats of easy-lease.

I thought I should test a small amount of the gel coat I intend to use on the mould first (e c fibreglass polyester) info here

I'm glad i did the test because it won't release at all. I also mixed up a small amount of Easy composites general laminating polyester resin to test on the mould,
this released fine!

is there any reason why the EC Fibreglass polyester gel coat wouldn't work?
By Warren (Staff) - 11/3/2014 9:46:55 AM

Also if the mould is fairly fresh it could still be leeching a little styrene which doesn't help things!

Worst case use PVA for the first couple of releases until things settle down.