Other causes are deep scratches that scrape the protective finish and expose the underlying, untreated steel to salt, chlorine, or oxygen. It is easy to remove rust with home ingredients like ...

For really small spots, a rotary tool with a mini-wire wheel might work better ... might be too aggressive for removing rust from small, delicate objects or thin steel plating.

And especially on the underside or around the wheel wells, you will see quite a bit of rust. And I would like to remove that, so I can bring this car back to running conditions and also make it ...