sanding 90 degrees against the previous direction, but only makes one
pass with this grit before moving to 1,500. A single pass against the
direction of the 1,500-grit sand marks is then made with 2,000-grit
sandpaper.
Once he works through 800-, 1,000-, 1,200-, 1,500-and 2,000-grit
sandpaper using sanding blocks, Kopecky switches to a random
orbital sander for sanding with a 3,000-grit disk. He installs a thick
pad beneath the 3M Trizact 3,000-grit sanding disk so the pad
flexes without digging into the paint while he sands with medium
pressure at a low to medium speed.“At 1,500-grit, you’ll think it’s really a drag, but it’s worth it,”
Kopecky said.
After a pass with 2,000-grit, Kopecky is ready to move to 3,000-grit
and a new sanding tool: a random orbital sander. A 3,000-grit 3M
Trizact disc is installed on the sander with an intermediate pad between
the sander and the sanding pad to allow the 3,000-grit pad to flex
without digging into the paint. He then sands the panel with medium