Answer
Keep the same grit, clean the surface, and replace the sheet. A loaded or worn sheet will not cut well.
Why it happens
The sheet is loaded with dust or residue, worn smooth, or being used with too much pressure.
Recommended grit
Keep the same grit, clean the surface, and switch to a fresh sheet when cutting slows.
Wet or dry
Dry for normal prep; wet for fine wet-sanding stages.
Success check
The sheet cuts consistently again without smearing residue.
What to do
- Stop sanding and inspect the abrasive surface.
- Clean dust or slurry from the work area.
- Replace the sheet when it feels smooth or glazed.
- Continue with lighter, even pressure.
Avoid: Do not keep sanding with a smooth or glazed sheet.