Answer
For clear coat refinement, stop dry sanding and use clean wet sanding with 1000, 1500, 2000, then 3000.
Why it happens
Fine clear coat work usually needs clean wet sanding and very fine grits.
Recommended grit
Use clean wet sanding with 1000, 1500, 2000, and 3000 for clear coat refinement.
Wet or dry
Wet.
Success check
The surface has a uniform fine wet-sanding haze instead of deep dry scratches.
What to do
- Stop dry sanding the clear coat.
- Clean the surface completely.
- Wet sand with 1000, 1500, 2000, then 3000.
- Use light pressure and clean water.
Avoid: Do not use coarse dry sanding on a fine clear coat finish.