Talk Composites - The Forum for Advanced Composites

Imperfect mould surface.

http://www.talkcomposites.com/Topic2482.aspx

By Tollaus - 8/2/2012 11:09:36 AM

Hi guys! 
I've made the mould for my second piece of the project and its surface came out with a lot of imperfections. 
I have sanded it but I took off some black gel coat in some parts, so now the polyester resin from the mould is showing up in some spots and the surface isn't decently even yet. I knew the plug wasn't perfect but the mould came out worse than expected. 
Here are my questions: 
1) can I continue to sand until I get a decently even surface, even though the yellow resin is visible? 
2) do I need to re apply the gel coat and then sand it again? 
3) I need to to even out the surface with bodywork filler and then apply the gel coat again?

I do not want to make the mould again, so which is the best way to do it in your opinion? 
Many many thanks in advance!
By Matt (Staff) - 8/3/2012 9:16:26 AM

Is it OK to bump this over to general composites as I don't think it relates directly to any of our products at this stage?