Peter Newell's Top Five Sanding and Buffing Tips 1. Always add a dash of liquid dish soap to the water in your wet-sanding bucket to help lubricate the sandpaper and cut excess friction on the paint surface.
2. To make your sandpaper more pliable, be sure to let it soak in your wet-sanding bucket a few minutes before getting started.
3. When wet-sanding body surfaces, be sure to use a semi-hard block on all flat areas, and a soft block on contoured areas or edges. To remove orange peel on a panel (especially at the edges), carefully wet-sand to the edge since final compounding and buffing will not remove any remaining peel.
4. In between the compounding and polishing stages, it's a good idea to wash the surface areas with fresh water to remove any remaining compound residue. Once dried, you'll be able to properly inspect the surface prior to completing the polishing stage.
5. Remember that compounding helps to remove any wet-sanding scratches while preparing the surface for its final step. Polishing brings out the final luster, especially when followed by hand waxing.