does anybody have any experience with composites?
i have a problem with my fibreglass moulds: whenever i pull a carbon fibre part out of the mould, it leaves a carbon fibre weave imprint onto the surface on the mould which i can just barely feel with my fingernail

the mould tool face is gelcoat (can't remember if it was tooling gelcoat or ordinary gelcoat) backed by several layers of 450g of fibreglass, i use 3 or 4 layers of release wax and then perform resin infusion and demould 2 days later