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!
I write books. My latest is a YA science fiction novel called Homeland (it's the sequel to Little Brother). More books: Rapture of the Nerds (a novel, with Charlie Stross); With a Little Help (short stories); and The Great Big Beautiful Tomorrow (novella and nonfic). I speak all over the place and I tweet and tumble, too.