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Problem

Primer dust loads the paper

Primer dust packs into the abrasive during prep.

paint primer wet sanding dry sanding
Answer

Let primer cure, use light pressure, and clear dust often. Use 320 to 600 for most prep stages.

Why it happens
Dust is not being cleared often enough, the coating is not ready, or the sheet is worn.
Recommended grit
Use 320 to 600 depending on the primer stage.
Wet or dry
Dry or wet depending on coating instructions and finish stage.
Success check
The primer powders cleanly and the sheet keeps cutting.

What to do

  1. Let the primer cure as directed by the coating maker.
  2. Use light pressure.
  3. Clear dust frequently.
  4. Switch sheets when cutting slows.
Avoid: Do not sand uncured primer.

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