There’s no better feeling than printing something like this, then taking the pieces off the build plate and assembling them, only to find everything fits perfectly and works smoothly. This part also comes with a drill bit insert you can replace the handle with. Then you can use a power drill to turn the gears really fast. Even running a power drill at top speed, these gears work flawlessly!
The model can be found here: http://www.thingiverse.com/thing:23030 (model credit: aubenc)
A time-lapse video of the print can be found here: https://www.youtube.com/watch?v=n94G-tNsSPo