Answer
For glass, use only ultra-fine wet sanding: 1000, 1500, 2000, then 3000. Test first in a small hidden area.
Why it happens
Glass is hard and scratch-sensitive, so grit choice and technique matter.
Recommended grit
Use ultra-fine wet sanding only: 1000, 1500, 2000, then 3000.
Wet or dry
Wet for glass-related fine work.
Success check
The test area shows controlled fine scratches without unwanted damage.
What to do
- Test first in a small hidden area.
- Use clean water and very light pressure.
- Start with 1000 or finer; use 1500, 2000, and 3000 to refine.
- Stop if the test area shows unwanted visible scratching.
Avoid: Do not use coarse or medium grits on visible glass surfaces.