Title. The bike is a SV650.
Thanks.
A machine shop?
honing is done to the inside of a bore. So i assume you mean having the surfaces ground?
He wants each individual cross-drilled hole to be bored for maximum airflow.
there is a tool for this that i hear GOOD things about
Yeah, honing the center bore, or grinding the friction surface? First I could do pending rotor size, second really requires either a magnetic table blanchard grinder, or a jig to properly hold the rotor true to a regular blanchard grinder(IE flywheel surfacer)
Gotta be withing a few ten thou or first time you grab brake you’ll wish you didn’t 
Yeah, that flex-hone tool.
The friction surface. When I changed brake compound, I did not have it done and they are now a little glazed. Brake still works great, but I know it can work better. For car rotors all you need is the flex-hones tool and the brake lath, but bike rotors are a bit different due to mounting and width.
Just like you said adam, you almost need a rig with some kind of a turn table underneath a drill press with the flex-hone attached to do it proper.
A bunch of racers told me they do it by hand with sand paper and in a specific pattern, but it is a long process to do it right…
yeah I was just going to say, all they are doing is getting the pad deposits/glaze off the surface…you can do that with a random pattern and sandpaper