I made a CD launcher once. It spun them upupwards of 80,000 RPM, then the spring loaded spindle would snap forward at about 400lb of force, then one side rail would collapse in. It would launch 'em out of sight. It made a hella clay pigeon machine, except when the CD's were edgewise, you couldn't see 'em. Painting them helped but was a pain. I only had one CD come apart in the launcher, and that was because it had a crack in it. Scared the bejesus out of me. They don't mess around at 80k+ RPM.