Hi all, 

I have a question regarding making moulds from mdf or oak. I cnc milled 2 moulds, one from MDF and one from oak. Moulds are for bike helmet I want to make.
Can you recommend what final layers should I put on mould? What couloring or something like that?

I already tried to put some colors but mould got ruined because carbon with epoxy resin glued to it.

Please any help and I will be grateful.

you want the epoxy just to seal the wood. apply generously and at the end of the pot live wipe away all excess resin with a shop towel.

once it is sealed you can continue with 2k-paint. Usually a wooden surface will not leave you with an acceptable finish with paint and no sealer.