Quiz: What is the best method for achieving a smooth finish when s June 28, 2025 by Sander Johnson What is the best method for achieving a smooth finish when sanding multiple layers of old paint? Discover more about Sanders and Sanding at our home page. A) Use a high-grit sandpaper and sand in circular motions B) Use a low-grit sandpaper and sand in a single direction C) Use a medium-grit sandpaper and sand in a single direction D) Use a high-grit sandpaper and sand in a single direction Submit Answer