How to Repair Scratches on Carbon Fiber Surface?
2 Answers
Sand the damaged area outward from both sides using sandpaper, ensuring the sanded area is slightly longer than the damaged section, and appropriately thin the damaged area. Cut the carbon fiber cloth to size and fully saturate it with epoxy resin. Then, evenly apply a layer of resin to the damaged surface and wrap the carbon fiber cloth around the affected area. Wrap with electrical tape and apply pressure to squeeze out excess resin. After the resin has cured, remove the electrical tape and sand the surface smooth. Finally, proceed with painting: first apply the base coat, then restore the lettering or patterns, followed by clear coat application, sanding, and polishing.
I installed carbon fiber kits in my car and got them scratched several times, but I’ve figured out some tricks. For minor scratches: first, clean the surface dust with a clean microfiber cloth, ensuring no debris is left; then apply some automotive polish—brands like Meguiar’s, which specialize in carbon fiber repair, work well—and gently buff the scratched area in small circular motions. Avoid using too much force, as carbon fiber is brittle and prone to cracking. Stop once it feels smooth, rinse off any residue, and apply a layer of UV-protective wax to prevent oxidation. If the scratch is deep and exposes the white layer, it’s hard to fix yourself—you’ll need to visit a professional shop or consider covering it with a wrap. When parking, avoid walls or gravel piles, and use soft water when washing the car. I learned these tips from DIY forums, saving thousands in repair costs. The key tools are cheap, just spend around 100 yuan to try at home, but patience is crucial—don’t tackle too much at once to ensure even results. With long-term care like this, minor scratches won’t affect the overall aesthetics.
