Hi,

I've recently come on to a problem  of which I'd like to know the exact cause, so what better place to ask than here..

I've skinned a few  plastic parts in CF  using the black basecoat & EL epoxy (fast hardener) and everything went as usual .. perfect

I applied an automotive UV resistant clearcoat (by spraygun) and the parts all looked stunning.

Now after a couple of days on the car, we're starting to see and feel  "ribbels" form  that run along exactly with the carbon fibre weave.
I've spoken to a few other people here that are into skinning and all have had the same problem with some parts but cannot explain the cause. They all say  that sanding & re-clearing the part solves the problem, but I'd like to know what causes it.

Some parts were installed on cars that were in the sun, others were  in a garage and have seen no sun .. yet both suffer the same issue

If it was not properly cured before sanding, you would find the sanding much harder and the resin would clump the paper and almost take chunks out of the surface.

Warren Penalver
Easy Composites / Carbon Mods - Technical Support Assistant