Soak all your wet or dry paper in a bucket of clean water overnight to soften the paper’s backing. This will cut down on the chance the paper will gouge the surface of the body panels. When the paint/clear is dry, use wet or dry paper to knock down the orange peel. A 1500-grit paper is fine for the initial cut, but then switch to 2000-grit for the final sand. You can use more aggressive papers, but these will be the safest for the beginner. If you are sanding a factory paint job, grab some 3000-grit paper and be very careful, as the factory clear is very thin. Have a bucket of water and a spray bottle ready when color sanding. The bucket will be used to clean your paper, and the spray bottle filled with soap and water mixture will be used to lubricate the sanding process. If you are color sanding a car that is already assembled, protect all your chrome and trim pieces with tape to prevent scratching.