Answer
For a sticking door edge, use 80 or 120 on the high spot, then smooth with 180 or 220.
Why it happens
The edge needs controlled material removal and smoothing so the door can close without rough marks.
Recommended grit
Use 80 or 120 for material removal, then 180 or 220 to smooth the edge.
Wet or dry
Dry.
Success check
The door closes freely and the sanded edge feels smooth.
What to do
- Mark the rubbing area.
- Remove material with 80 or 120 only on the high spot.
- Smooth the edge with 180 or 220.
- Clean dust before repainting or sealing.
Avoid: Do not sand the whole door edge when only one high spot is rubbing.