About this 3D model

Edit: I've added a re-done gear from Gearbox 2.0 which should actually pass skeinforge. The script to use for gear generation is this one: http://www.thingiverse.com/thing:390 because it generates the entire gear for you instead of a single tooth. This is important because using array modifiers to create the rest of the gear generates stray edges, which can be nasty to fix and prevent skeinforge from being able to use them.I'm working on a gearbox in Blender, using the script here:http://www.selleri.org/Blender/scripts/text.htmlThe script generates single-tooth pairs, one for the gear and its pinion, and you're expected to be able to coax Blender to do the rest, but it gives me teeth I know will really work together.I unioned the pinion onto the front of the gear to make a 40 to 10 ratio double gear. (What do you really call these?) With a bit of extruding and squinching, I put a pin on the top and its negative on the underside. I couldn't think of a good way to make a positive pin printable, so I'm hoping putting holes on one side of the gears is mechanically viable.A gear train made of a few of these could give a motor decent oomph, assuming I can bodge together a mechanical framework to support them, the motor, and the wheels. More bits of this project later.