Carbon bike repair is not a myth. I have repaired real carbon fiber motorcycle gas tank protectors with light scratches by lightly wet sanding with 1000 grit paper to get rid of the scratch followed by polishing with a rubbing compound.
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Carbon fibre scratch repair. Carbon fiber can scratch you can sand with some fine grit sand paper well depending on how large the scratch is. How to remove scratches on carbon fiver accessories. As an example if a corvette has a visible carbon roof that is scratched a repair can be made if the roof will be painted. Composite dimensions 189346 views. Iirc its something like 12yd. With a light cosmetic scratch the panel can be clear coated to hide the scratch.
Depending on the ferocity of your scratch and the level of your resolve to repair it you have a couple of options for getting that shine back. Read the gear junkie article. In fact carbon fiber is one of the most repairable materials and each appleman repair is covered by a 10 year warranty. Theres a fabriccraft store near my end of the world that sells legit carbon fiber weave by the yard. First you can take the easy route and simply cover the scratches with a clear coat to protect them. Since it sounds like your fix is cosmetic and not structural you could probably get away with just putting a layer or 2 of that down to cover the scratch.
But if the carbon fibers are torn a repair patch would be visible and not acceptable to the customer. You wash them the same as you would paint you can polish them to remove swirls and increase gloss and you can wax and seal them just the same as well. With clear coat and some time sounds like maybe a 20 fix. For the most part you can and should care for your carbon fiber components no differently than you do your painted surfaces. If the scratch is very light however i would try first with the polishing compound alone see how that comes out before any water sanding. Repairs are stronger than the pre damaged frame add no measurable weight and dont alter the ride of the bike.
Carbon fiber is just fiber and epoxy layered together. That scratch is not going to affect the bike in any way but if its making you crazy you can try putting something like epoxy paint nail polish etc on it and then sanding that until it matches the finish on the bike. Some use high quality chip free nail polish clear coat such as cnd speedy clear coat. Its a really expensive glue sandwich. Its a myth that carbon cant be repaired. Diy carbon fiber repair kit and step by step tutorial duration.
Gallery of Carbon Fibre Scratch Repair
