The following sanding method is shown on PPG Concept acrylic
urethane with a high solids polyurethane clear.The process Kopecky uses to achieve perfect paint boils down to
leveling the paint through sanding for a smooth, even surface before its
final polish.
It’s difficult to show, but this fender has plenty of orange peel and a
few bumps from dust in the freshly applied paint. The sanding
method covered here will eliminate these imperfections for a
smooth, level show-quality finish.
“In the old days, you could go from 1,000-grit to polishing with a
heavy-grit compound, but you can’t with new products,” he said. “You’ll
get swirl marks.”