you can use a black filler... either a black body filler or some epoxy filler.

If you apply any wax based product then you won't be able to clearcoat on top of that. The only way I have been able to get rid of them completely is to keep applying clearcoat and sanding until they are filled level with the surrounding surface. I have also used black shoe polish to fill/conceal the pin holes after clearcoating, not really a fix more of a cheat. But it does tick the cheap and quick boxes.

Turtlewax enriched polish and wax has a chip stick which you can use. Was recommended on a easy composites guide that came out a few weeks ago.

Hello, new here.

Been making some out of autoclave parts in prepreg, but I'm having problems with pinholes. They are very small. Lacquering and sanding time and time again doesn't seem to work. I believe they must be filled. Looking around the web, most products made specifically for the job seem to be American. Does anyone know how to do this efficiently? Needs to be cheap, quick and easy. It will need to be lacquered afterwards for UV protection.

Thanks