Answer
1000 grit is for fine wet sanding and scratch refinement, not heavy removal.
Why it happens
1000 grit is an ultra-fine grit for wet sanding and fine scratch refinement.
Recommended grit
Use 1000 after 800 or as an early fine wet sanding step, then 1500, 2000, and 3000.
Wet or dry
Wet for fine finishing uses.
Success check
The surface has a uniform fine haze or scratch pattern.
What to do
- Clean the surface.
- Wet sand with light pressure.
- Rinse often.
- Move to 1500 or finer after the surface is even.
Avoid: Do not use 1000 grit for heavy removal.