Winner of the Pattywac Makerbot United Challenge for collaborative design: http://www.makerbot.com/blog/2011/05/16/pattywac-makerbot-united-challenge-winner/

Thank you team! :-)

Video of the first ticking powered escapement mechanism:

http://www.prototribe.net/vidplay/testjig2.html

__WARNING

Several bugs have been fixed since this release, and the current tip-of-the-spear for development is a simplified 2-gear clock with only minutes and seconds.

Current development version to be found on git hub here:

github.com/syvwlch/Printable-Clock-Project

Current version of the 8-Gear Clock (revision D):

http://www.thingiverse.com/thing:8284

Current bleeding edge development version of the test jig:

http://www.thingiverse.com/thing:8275

Current repository for the latest version of the clockwork library:

http://www.thingiverse.com/thing:8155

Thanks to RustedRobot for his continued assistance debugging the clock!

__WARNING

This is both a derivative of the printable clock PoC, and of my escapement library: http://www.thingiverse.com/thing:7822 . The involute gear profiles are from the MCAD library.

(EDIT: The clock got a mention by Cory Doctorow on boing boing!

http://www.boingboing.net/2011/04/23/model-files-for-a-wo.html )

I cleaned up the code so it would render faster, moved all the gear work into the library, and created a laidOutToPrint() module to facilitate creating the STLs of the individual parts. I included an optional print volume visualizer, so you can check every part doesn't exceed the printer's capabilities.

The assembled() module is still fully animate-able, and I've added colors to help see if everything meshes properly.

The clock itself now has clip-on hands, front & back frames, and most importantly, I switched to a different set of gear ratios (3.2, 3, 2.5 & 2.5) which allows for bigger shafts by keeping the ratios small.

Assuming an 80x80x80mm printing volume, you now have a bit more than 12mm (almost half an inch!) available for the overall diameter of the shaft, the two sleeves that slide over it and the necessary clearances.

I think this configuration is close to final, except for the escapement, which will need fine-tuning... but without re-printing the rest of the clock.