When I was young, my dad often did stupid stuff and told me not to do it like him, that when I do things I should do them properly. Well, sometimes I have to just get the job done. At least I didn't do it ignorantly, I knew I was going for a Darwin award.
The diamond cutoff doesn't throw a lot of sparks at 10,000RPM.
Nobody should try to do what I did. It could cause a huge explosion and get you killed, or even worse.