Thingiverse user Syvwlch has been gradually perfecting a 3D-printable working clock for weeks now, and last week, he declared provisional victory. In celebration, another Thingiverse user, RustedRobot, actually printed and assembled the clock, and notes: "All the hands seem to move move as expected."
There's lots of interesting build-notes at the link, below. Love this experimentation and collaboration among the 3D printing set!
Clockwork Library & Printable Clock Script by rustedrobot