Answer
Wet sand lightly through 1000, 1500, 2000, and 3000. Use 800 only to correct deeper lines.
Why it happens
A previous grit or debris created scratches deeper than the current fine grit can remove.
Recommended grit
Wet sand through 1000, 1500, 2000, and 3000. Use 800 only to correct deeper lines.
Wet or dry
Wet.
Success check
The haze is uniform with no isolated deep lines.
What to do
- Rinse the surface and paper.
- Use clean water and light pressure.
- Refine only the affected area evenly.
- Move finer once the deeper lines are gone.
Avoid: Do not dry sand a fine clear coat finish unless the coating instructions call for it.