Answer
For sealed wood before recoating, scuff lightly with 320 or 400 and remove dust completely.
Why it happens
Sealed wood needs light scuff sanding to dull the surface before another coat.
Recommended grit
Use 320 or 400 lightly before recoating.
Wet or dry
Dry.
Success check
The surface is lightly dulled and dust-free before recoating.
What to do
- Clean the sealed surface first.
- Scuff lightly with 320 or 400.
- Do not cut through edges.
- Remove dust before the next coat.
Avoid: Do not recoat over a glossy sealed surface without scuffing.