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Problem

What grit for metal hardware before painting?

Paint can chip from metal hardware when the surface is too smooth or dirty.

metal paint primer dry sanding
Answer

For metal hardware before painting, clean first, scuff with 220 or 320, then refine with 400.

Why it happens
Metal hardware needs cleaning and scuff sanding so primer or paint can grip.
Recommended grit
Use 220 or 320 for scuffing, then 400 for smoother paint prep.
Wet or dry
Dry.
Success check
The hardware is clean, dull, and evenly scuffed.

What to do

  1. Clean grease and residue from the hardware.
  2. Scuff with 220 or 320 grit.
  3. Use 400 for smoother visible pieces.
  4. Remove dust before primer or paint.
Avoid: Do not paint over oily or glossy metal.

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