How do you fix a rusty brake drum or disk or sticking parking brake?

To fix a rusty brake drum or disc, start by cleaning the surface with a wire brush or sandpaper to remove rust and debris. For severe rust, consider using a rust remover or brake cleaner. If the parking brake is sticking, check the cable for damage or corrosion, lubricate moving parts, and ensure proper adjustment. If issues persist, replacing worn components may be necessary.