30,000 rpm is the limit. Maybe there is a crystalline structure that can take more. Electrons orbit their atoms at nearly the speed of light when the nucleus has Z=147; that is 147 protons. Sets a maximum mass to elements because there is a limit to how many neutrons can pack in there.
Myth Busters mounted a CD on a shaper, and I think they had to boost the speed to get it to shatter. Around 30K RPM, iirc.
Routers, and plain old CD drives just wouldn't do it.