http://www.thingiverse.com/dpavlin/favorites
http://www.thingiverse.com/thing:24545
http://www.thingiverse.com/thing:23663
below printbed, requires modification to y belt also
http://www.thingiverse.com/thing:27720
http://www.thingiverse.com/thing:27395
http://www.printrbottalk.com/forum/viewtopic.php?f=6&t=1052
(solved with a little bit of force)
http://www.printrbottalk.com/forum/viewtopic.php?f=6&t=1383
WIP: ordering replacement
http://www.printrbottalk.com/forum/viewtopic.php?f=15&t=1688
WIP: print spur gears http://www.thingiverse.com/thing:26243
http://www.printrbottalk.com/forum/viewtopic.php?f=70&t=1711#p12886
http://www.printrbottalk.com/forum/viewtopic.php?f=29&t=662
http://www.printrbottalk.com/forum/viewtopic.php?f=6&t=1615