Read the gear junkie article. Iirc its something like 12yd.

Carbon Bicycle And Component Care Pioneer Cycle
Carbon fiber scratch repair. After coming across a diy carbon fiber repair kit on amazon i decided to try my hand at fixing my frame. The red carbon fiber shell is beautiful and the cloth cover will help keep it so. Theres a fabriccraft store near my end of the world that sells legit carbon fiber weave by the yard. 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. 3x carbon fiber interior dashboard air vent cover for 10gen civic 10th 2016 2017. With clear coat and some time sounds like maybe a 20 fix.
Repair service tools. Carbon fiber does not contain any metal elements. Not structural but ugly supplies the resin and hardener included in the kit. The repair shop technician will be fixing the outer skin of a vehicle a ready to repair type of damage such as a scratch on the surface of a hood or a small hole in a door panel. In fact carbon fiber is one of the most repairable materials and each appleman repair is covered by a 10 year warranty. A look at the damaged area.
The 40 kit includes a 39x6 sheet of 3k. Published on nov 23 2018. How to remove scratches on carbon fiver accessories. Carbon bike repair is not a myth. Most collision shops will be making structural repairs to cosmetic carbon fiber panels. Repairs are stronger than the pre damaged frame add no measurable weight and dont alter the ride of the bike.
Car carbon fiber rear bumper lip diffuser splitter canard protector anti scratch. But even more important the inside is plush and cushiony fits my large classical guitar perfectly and will really protect it. 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. Its a myth that carbon cant be repaired. Autoplaywhen autoplay is enabled a suggested video will automatically play next. 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.
I ordered the easy start kit from a company called gorilla carbonworks on amazon. The case is lightweight comfortable to carry and has easy to use clasps that cant damage the guitar.