Anyone drilled rotors for better braking?

I may be wrong but I think the biggest thing is the risk of damage to the cutting equipment.

Better to tell one customer "NO" than to tell 10 customers "We can't" because our machine is down.

yea my auto shop at school did a set for our teacher and it was a big headache having to slow cut them multiple times only taking like a thousandth or two at a time. for the time in labor that it would have cost to cut them with out breaking anything or ruining the rotor could have paid for two or three sets of normal rotors.