I’m afraid I don’t have any photos of the mold at this time, but can provide later if needed.
Having been forced to abandan wet lay up in favour in resin infusion as my parts are contoured, I have made my first resin infusion mold and have come up against a new problem.
The part(s) have a textrued pattern which I obviously don’t want in the CF part. Concerned about this and the possibility of a sticker when I come to de-mold the pattern, I back-filled the tiny textured channels with a filling wax as much as possible. The wax has good mold release properties, so I thought “win”.
Well, the pattern de-molded pretty easily but after cleaning up and starting to rub back the remains of the textured pattern that have transferred to the mold I can see a few 2-3mm voids on the curved edges and a lot of tiny black dots on the flat sections. On closer inspection the dots are voids that are filled with wax and residual dirt from the pattern.
Question - where have these voids come from? Is it air trapped in the gel coat (first layer of the mold) or is it a reaction between the gel coat and the wax / gel coat curing?
FI. the gel coat is a 2k BPA-epoxy resin which is backed up with an inch or so thickness of a fibrous putty when it has cured for 2 hours or so and gone tacky.
I’m trying to work out what I’ve done wrong before committing further funds to what is increasingly looking like a fools errand. 
All in the name of R&D I guess