You’ve finished painting your car, but you notice scratches or grooves in the surface. These sanding marks come from the sanded substrate below the finish. The marks can be eliminated by sanding and refinishing.
In this article, I’ll answer common questions about how to prevent sanding marks and eliminate them when it happens.
Sanding marks (also called streaked finish or sand scratches) are dark or streaked marks that look like sand scratches in the paint film.
Sanding marks happen when scratch marks or distorted metallic/mica flakes appear close to the surface of the paint surface because:
To fix sanding marks, follow these two steps:
Preventing sanding marks requires knowing when and how to sand basecoats and single-stage finishes:
Doing these things will prevent sanding marks from appearing on your paint finish and give you the smooth, glossy surface you were aiming for.