Stop in for a cup of coffee

@MOPARMITCH
With a brake lathe, would you need to cut inside and out to bring it more concentric or how would it balance it? I haven't had coffee yet....
I used to cut a lot of brake drums and brake rotors when I was in the parts business. If you mount a drum and hub and try to make a light cut on it you will find out if it's out of round. Depending upon how far out of round it is it could be cut round again. But if it's out of balance you really can't tell that on a brake lathe