cleaning up the brake calipers

[ebpda9]

does anyone know a good way to clean my brake calipers ? i had them stuck and it was kind of overheating the rotors, plus all the dust got cooked on them. i cant figure out a way to get them clean and paint them. i tried the wire brush, i tried sanding them with a grinder and nothing works what should i do to get them clean ? also what is a good way to get rid of the paint on my rear drums ? whyle they were out in the summer my brother found a spray can of yellow paint and felt it was his duty to rice them out. not only they look gay, but it does not match anything on the car