About this 3D model

I needed a slightly larger 3dprinted ball bearing than i already have for a demo. There is a 0,3mm gap between the parts themselves and the custom support. Just print and remove support. Printed in ABS w 0,15mm layer height. Short video (courtesy of Creative Tools):http://youtu.be/nqusY3M5Lso?list=UUGWmj8zbYmQFBZxZvGzR_Bw