Answer
For a glass bottle edge, wet sand with 400 or 600, then 800, 1000, and 1500.
Why it happens
Glass edges need fine wet sanding to reduce sharpness without chipping the edge.
Recommended grit
Use 400 or 600 to start, then 800, 1000, and 1500 for smoother edges.
Wet or dry
Wet.
Success check
The edge feels smoother with no sharp chips.
What to do
- Rinse the glass edge and keep it wet.
- Start with 400 or 600 using light pressure.
- Refine with 800, 1000, and 1500.
- Clean the edge and check carefully by touch.
Avoid: Do not dry sand glass dust.