Answer
220 grit is for final prep on many wood and paint-prep jobs. It is not for heavy removal.
Why it happens
220 grit is a common final prep grit for many wood and paint-prep jobs.
Recommended grit
Use 220 after 150 or 180 for final prep, then move finer only if the finish requires it.
Wet or dry
Dry for most prep.
Success check
The surface is evenly prepped with no coarse scratches.
What to do
- Use 220 after earlier scratches are removed.
- Sand lightly and evenly.
- Clean dust.
- Inspect before applying finish or moving finer.
Avoid: Do not use 220 to remove heavy material.