Bearing (Ball race)

A 3d printable bearing designed in FreeCad.
This was an experiment to see if it was possible to 3D print as a single object.
This bearing was my first attempt to design & print an object. The first version had 12 balls. and was a bit rough. I managed to fit 14 balls in the next design and it runs much smoother.
I first printed in ABS but found better results printing in PLA.
With ABS the balls seamed to break away and stick to the extruder during printing.
You must print with supports to hold the balls from the frame while printing.
The more attention to removing the supports from the balls will result is a smoother running bearing.