Or de-rust the brakes. Something down there makes scraping sounds when I turn. I began with the brakes because they are the easiest to inspect and clean, and have previously made contact noise due to rust buildup that I found I hadn't completely removed. This time I bolted a leg vise to an outdoor table so I have both hands free to hammer and chisel the rust. The rotor is in a 3-jaw with a 5C mount in a spin index, not exactly a brake lathe but good enough to hold and rotate it while grinding down the outer edge rust buildup. The chuck and spin index would have been enough to mill and drill a copy of the lathe spindle spider.
6 months ago