Hi,

I have searched a lot, but I can't find a clear answer to my case.
I am making moulds for the carbon fiber fenders. The moulds are almost ready and I started to wonder if I need to post cure them? They are made from vinylester gelcoat, and polyester resin with fiberglass. If I need to post cure the moulds, how should I do it and do I need to leave the original fender inside the mould while doing it?

And the same applies to curing the parts. I will make the parts from carbon fiber and epoxy using infusion. How those should be cured? Parts inside the moulds or not? I will use this resin: https://composite24.co.uk/infusion-epoxy-resin-1-5kg

Also, how much resin I need? I am guessing that 1.5 kg/fender?

It looks quite tight on some of the curved wing edges -  but hard to see properly so may just be the photo's.

Also you can get vacuum that is hard to break sometimes.

Also consider possibly the resin hadn't fully cured at first attempt as epoxies in particular, grip the mould surface if a little bit green.

Warren Penalver
Easy Composites / Carbon Mods - Technical Support Assistant