UNTESTED ball bearing (single Print)

This thing was made with Tinkercad. Edit it online https://tinkercad.com/things/lpF3lw1Qm34
Please leave comments about improvements, how you printed, if it worked or not etc. Thanks!
I'm almost certain this wont work but i just wanted to put it out there if anyone wanted to modify it. If you want an assembleable version of this go to that version here http://www.thingiverse.com/thing:126644