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Problem

What grit for ABS plastic before painting?

Paint can peel from ABS plastic if the surface is glossy or contaminated.

plastic paint primer dry sanding
Answer

For ABS plastic before painting, clean first, scuff with 320 or 400, then use 600.

Why it happens
ABS needs cleaning and light scuff sanding before primer or paint.
Recommended grit
Use 320 or 400 for scuffing, then 600 for smoother paint prep.
Wet or dry
Dry.
Success check
The ABS surface is clean, dull, and evenly scuffed.

What to do

  1. Clean the ABS plastic surface.
  2. Scuff with 320 or 400.
  3. Use 600 for smoother visible areas.
  4. Remove dust before plastic primer or paint.
Avoid: Do not gouge ABS with coarse grit.

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