This thing is very cool, thanks!
Print worked first time with xyzprinting DaVinci 1.0, "good" setting with 25% infill. Took many hours though.
Tough part was finding 10mm ball bearings.
Fortunately, I found some ~9.5 mm bearings.
They work fine although the dial gets tough to turn sometimes, maybe when a ball gets stuck in there or something.
Anyway, this was great!