Answer
Clean greasy cabinets first. After they dry, scuff with 180 or 220 before primer.
Why it happens
Sandpaper can spread grease into the scratch pattern instead of removing it, which weakens primer or paint adhesion.
Recommended grit
Clean first, then scuff with 180 or 220 before primer.
Wet or dry
Dry after cleaning.
Success check
The surface is clean, dry, dull, and ready for primer.
What to do
- Degrease the cabinet surface first.
- Let the surface dry fully.
- Scuff with 180 or 220.
- Remove sanding dust before primer.
Avoid: Do not sand grease into the cabinet surface.