While that maybe a stupid question I have a question that I actually feel stupid asking. I was told by a mechanic that you can't have cb500 brake rotors turned, is that true? Personally I call bs, but at the same time I don't want to send them out if I'm going to regret it.
The rotors on our bikes are stainless steel, which is harder to machine than regular steel. This is very hard on cutting tools causing them to dull quickly. Unless you pay higher costs for very durable cutting bits, it is better to have the stainless rotors ground, rather than turned. This is a different machine type than your average lathe.
So, he was correct than stainless rotors can't be turned... on his particular machine.
You will have to find a shop that can handle stainless rotors. They can be resurfaced to a smaller dimension as noted above. With the right equipment. Usually flywheel shops have the proper grinder (to remove hard spots), and the tooling to resurface flywheels and rotors.
Cheers,