What is the solution for dull paint after sanding with sandpaper?
4 Answers
The solution for dull paint after sanding with sandpaper is to repaint. The repainting method is as follows: 1. Clean the car thoroughly; 2. If the car surface is too smooth, use 600-grit sandpaper to sand it until it feels rough, which helps the paint adhere better and prevents peeling; 3. When spraying paint, hold the sprayer about 20 cm away from the car and spray evenly, applying multiple coats for better results; 4. When applying multiple coats, ensure a minimum interval of 10 minutes between coats to allow the paint to dry and avoid sagging; 5. If sagging occurs, wait for it to dry, then sand it smooth with 600-grit sandpaper and spray paint from a distance to cover it; 6. After the paint is completely dry, apply a layer of clear coat to enhance gloss, protect the paint, and improve durability.
Last time I sanded my car's paint, I ended up with a matte finish—how embarrassing! As a beginner, I chose coarse sandpaper, which left obvious scratches and stripped the shine. To restore the gloss, I had to start over step by step: first, lightly sand uneven areas with 1000-grit wet sandpaper, then switch to 2000-grit for wet sanding until the surface was smooth. After washing off the dust and drying, I applied polish—preferably a dedicated automotive polishing compound—using a damp sponge in circular motions with even pressure, taking my time to gradually smooth out the scratches. Once polished, I cleaned the surface and applied liquid wax, letting it dry to magically restore the shine. The whole process required effort but saved repair costs. To avoid repeating the mistake, I now test sandpaper grit on a small area first to ensure it won’t damage the paint. Overall, patience is key—practice makes perfect, and it’s a great way to level up DIY skills.
After sanding, the car paint lacks shine, commonly due to using overly coarse sandpaper or improper technique leaving burrs. From experience, the solution is straightforward: first, thoroughly clean the sanded surface to ensure it's dust-free before proceeding. Then, choose a remedy based on the scratch severity—for light marks, simply polish using a soft cloth with polishing compound in circular motions; for deeper scratches, a finer sanding may be needed, transitioning from 1500-grit wet sanding to 2000-grit, followed by polishing and waxing to restore gloss. Avoid excessive pressure throughout to prevent new damage. Tool-wise, manual polishing cloths are safer than machines for beginners. Additionally, paint type affects results, with metallic paint being easier to salvage. To prevent future issues, test a small area before sanding and select the correct sandpaper grit. Lastly, regular waxing post-repair helps maintain shine and prolong paint life.
Dull paint after sanding is quite common, and I've solved similar issues before. Here's a simple solution: Apply car polish directly to the scratched area, gently rub in circular motions, then wipe clean with a dry cloth and apply wax. The shine will gradually improve. No advanced tools are needed for this process—just basic polishing compound on hand. For more severe cases, using a polisher at low speed can save effort. The key is patience—don't rush, and clean the surface between each step. To prevent recurrence, use fine sandpaper (2000 grit or higher) for sanding and avoid excessive force. Overall, this method is cost-effective and avoids repair shop expenses.
