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?

Wax release agents are usually known for their problem with elevated temperatures. The one in your link explicitly says that it's for room temperature use only. And the sun heats things up very unevenly. It could be that some spots got even higher than 55°C.