I left the lock on my rotor as I attempted to ride off on my bike. I brought a used rotor and replaced the bent rotor but then realized as I took the front wheel off and spinned the wheel that there was a slight bent in the used rotor that I brought. my last resort is purchasing new rotors but I wanted to know if a machine could true the rotation of the rotor.
Without measuring the run out, you don't really know if the rotor is bad or not. Most front rotors are semi-floating and have to ability to slide a fraction of an inch sideways. I have never seen the actual braking surface bent, always the aluminum carrier gets it. Mount the rotor on the wheel and install it back on the bike, spin it and hit the front brake lever., do this a couple of times, then spin the wheel and see if it rubs the pads and watch the gap. Sometimes you get lucky, but chances are you'll need a replacement. You never turn/lathe motorcycle rotors, bad idea!
Two things on a motorcycle can never be in too good a shape.That's tires and brakes.Junk it and get a good one.You never machine a rotor off of a bike.
