A can of brake clean and a rag will clean the rotors up. You can wash them in a parts washer if you have one but you'll still need to use a little brake clean to get the parts washer scum off.
Even coming off a brake lathe rotors can be rough. I like to wire wheel them with an angle grinder to smooth them out. The brakes lose the spongy feel a lot sooner.
Even coming off a brake lathe rotors can be rough. I like to wire wheel them with an angle grinder to smooth them out. The brakes lose the spongy feel a lot sooner.