What Grit Sandpaper Should Be Used for Car Paint Sanding?
1 Answers
For car paint sanding, a 500-grit fine sandpaper is sufficient. Car sanding is also known as car polishing, which is a process in car detailing performed before waxing, sealant application, or coating. Polishing is essential before applying a sealant or coating because only a finely polished car can achieve a mirror-like finish, which is a necessary step for sealant application. Difference Between Sanding and Not Sanding: Without polishing, the car paint will not be smooth, and the sealant will not last long, failing to provide long-term adhesion, making it no different from waxing. Of course, depending on the condition of the paint, not all three polishing steps may be necessary. For new cars, a single-step restoration is often enough. However, cars that have undergone coarse polishing must be polished with medium-grade polish, and those that have undergone medium polishing must be restored with fine polish. Before using sandpaper on the car, the entire vehicle must be washed with a high-detergent paint cleaner to avoid particles and dust causing new scratches during sanding. For paint surfaces with defects like coarse particles, fine sandpaper marks, or flow marks, use 600#-1000# wet sandpaper wrapped around a small rubber block to gently sand the surface until smooth. Car Polishing Tutorial: Washing the Car: Before polishing, the car body must be thoroughly cleaned to remove dust particles and avoid secondary damage to the paint. Sanding: After washing, perform rough sanding on the car body, selecting water sandpaper of different grits based on the size of surface imperfections or scratches. Polishing: After sanding, use an appropriate polishing machine with polishing wax to perform detailed polishing on the sanded car body. Mirror Restoration: After polishing, use a mirror-finish treatment agent to restore the mirror-like effect of the car body, followed by waxing and shining.
