Plainsman

I bought these for $25. Thought they would be a great way to practice carbon fiber refinishing since I would like to be able to rehab scratched carbon frames, cranks, etc. Looking for some best practices (turorials) that cover techniques, safety, etc. FWIW, these bars seem to be structurally sound, but appear to have been adjusted a lot without loosening the clamps enough, so the finish that is missing is around the clamp area. Any links most appreciated!

burnthesheep

I was able to do some structural repair following these:


For your part there, likely first you'd have to mask off the area away from the scratches then sand the area down until you don't see them. If it wasn't structural (you didn't have a crack and didn't have a hole or didn't need to "cut" damaged fibers out) then you can likely just put on a fresh epoxy coat to protect where you sanded out the scratches and then sand and polish the dry epoxy it till you get the finish you want. As you'd likely only need to sand the surface level of original epoxy to get those scratches out. Usually that's thick enough it takes some serous sanding to get to bare carbon (when the sanding material turns black).

Use a mask! Sanding fines are bad.

Kimmo

Problem with sanding carbon, aside from the nasty dust, is that it's easy to start going through it, which if you've got the traditional twill on the outside, due to the weave, is obvious.