Answer
For terra cotta pots, use 220 for rough spots and 320 for smoother paint prep.
Why it happens
Terra cotta is porous and dusty, so light sanding and cleaning help smooth the surface.
Recommended grit
Use 220 or 320 for light smoothing before primer or paint.
Wet or dry
Dry.
Success check
The pot feels smoother and is dust-free before coating.
What to do
- Clean loose dust from the pot.
- Sand rough spots with 220.
- Use 320 for smoother prep.
- Wipe dust before primer or paint.
Avoid: Do not sand wet terra cotta or paint over dust.