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Problem

What grit for surfboard repair sanding?

Surfboard repair patches can look raised, rough, or scratched after curing.

drywall patch wet sanding dry sanding polishing prep
Answer

For surfboard repair, shape cured resin with 120 or 180, then refine through 220, 400, 600, and 1000.

Why it happens
Resin repair needs leveling first, then finer wet sanding before polish or final finish.
Recommended grit
Use 120 or 180 for shaping cured repair, then 220, 400, 600, and 1000.
Wet or dry
Dry for shaping; wet for finer stages.
Success check
The repair is level and the scratch pattern is ready for finish or polish.

What to do

  1. Let the repair cure fully.
  2. Shape raised repair material with 120 or 180.
  3. Refine with 220 and 400.
  4. Wet sand with 600 and 1000 for smoother finish.
Avoid: Do not sand uncured resin.

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