Problem

What grit for wet sanding single-stage paint?

Single-stage paint can stay dull or show sanding marks after wet sanding.

Answer

For single-stage paint, wet sand 1000 or 1500, then 2000 and 3000 before polishing.

Why it happens
Single-stage paint needs fine wet sanding and polishing. Coarse scratches must be refined before polish.
Recommended grit
Use 1000 or 1500 for leveling, then 2000 and 3000 before polishing.
Wet or dry
Wet.
Success check
The surface has an even fine haze with no deep sanding marks before polish.

What to do

  1. Wash the painted surface.
  2. Wet sand with 1000 or 1500 for leveling.
  3. Refine with 2000 and 3000.
  4. Polish after sanding.
Avoid: Do not stop at 1000 or 1500 before polishing.

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