Answer
Use clean water, rinse often, and wipe between grits. Dirty slurry can leave uneven marks.
Why it happens
The surface and sheet are not being rinsed often enough.
Recommended grit
Use the planned fine grit sequence, such as 1000 to 3000.
Wet or dry
Wet.
Success check
The wet sanding haze stays even and controlled.
What to do
- Keep clean water on the surface.
- Rinse the sheet often.
- Wipe the surface between grits.
- Continue with light pressure.
Avoid: Do not let dirty slurry dry on the work area.