Home / Search / What grit removes rust from a bike frame?
Problem

What grit removes rust from a bike frame?

Rust on a bike frame can remain under paint if it is not removed before primer.

metal paint primer dry sanding
Answer

For bike frame rust, use 120 or 180, then 220, 320, and 400 before primer.

Why it happens
Rust needs mechanical removal and then finer sanding so primer can cover the repair area.
Recommended grit
Use 120 or 180 for rust removal, then 220, 320, and 400 before primer.
Wet or dry
Dry.
Success check
Rust is removed and the repair area has a smooth, even prep pattern.

What to do

  1. Clean the frame area.
  2. Remove rust with 120 or 180.
  3. Refine with 220 and 320.
  4. Use 400 before primer on visible areas.
Avoid: Do not paint over active rust or loose dust.

← Back to search