Hi everybody,
I have the same problem with all EG160 moulds I prepared the last months: Taking the part out of the mould shows a perfect finish, but after postcuring in the recommended cycle there are points where it looks like air is trapped. But you could not see it before the curing process... any tips?

Regards and a wonderful christmas for everyone!

Like above, try 2 very thin coats, the thinner the coat the easier it will be for the resin to remove trapped air to the surface. 
It can also help to heat your resin before applying it to reduce the viscosity, resulting in an easier way for the bubbles to find their way to the surface of your coat. 
 

Matthieu Libeert
Founder MAT2 Composites X Sports
website: www.mat2composites.com