Answer
For wood, sand with the grain for final prep so cross-grain scratches do not show.
Why it happens
Cross-grain scratches can remain visible after finishing.
Recommended grit
Use the correct wood sequence and sand with the grain for visible final prep.
Wet or dry
Dry.
Success check
Visible scratches follow the grain and are refined before finishing.
What to do
- Use coarse or medium grit only for leveling.
- Sand with the grain for visible final strokes.
- Progress to 180 or 220.
- Remove dust before finishing.
Avoid: Do not leave cross-grain scratches before stain or clear finish.