The color sanding and polishing stages is all about detail and making the paint smooth as glass. Starting with 600-grit paper, the car is wet sanded to remove the orange peel and any imperfections out of the clear. 1000-grit sandpaper is then used to remove the 600-grit scratches, and finally 1500-grit paper is used to smooth everything out. Use plenty of water and put a few drops of carwash soap in there to help lubricate the paper as you sand. Polishing is a three-stage process that starts with a coarse compound with a wool pad followed by a medium compound with a foam pad and then a fine compound with a fine foam pad. Here, Alan uses a small buffer to get into the edge of the roof.