Answer
2000 grit is for very fine wet sanding after 1500 and before 3000 or polishing.
Why it happens
2000 grit is used for very fine refinement before 3000 grit or polishing.
Recommended grit
Use 2000 after 1500 and before 3000.
Wet or dry
Wet for many fine finishing uses.
Success check
The surface has a very fine, even haze.
What to do
- Use 2000 after the 1500-grit scratches are even.
- Keep the surface wet and clean.
- Use light pressure.
- Move to 3000 for finer pre-polish refinement.
Avoid: Do not expect 2000 grit to remove deep scratches.