Answer
For mower blade cleanup, use 80 or 120 for burrs and rust, then 180 or 220.
Why it happens
The blade needs coarse enough grit for burrs and rust, then medium grit for cleanup.
Recommended grit
Use 80 or 120 for rust and burr cleanup, then 180 or 220 for smoother edge cleanup.
Wet or dry
Dry.
Success check
The blade edge is cleaner with burrs reduced and loose rust removed.
What to do
- Secure the blade safely before sanding.
- Use 80 or 120 for burrs or rust.
- Refine with 180 or 220.
- Clean the blade before reinstalling.
Avoid: Do not sand an unsecured blade.