The file 'Demo Set For: Parametric Involute Bevel And Spur Gears 3D Printer Model' is (stl,scad) file type, size is 744.0KB.
This is a quick hack of http://www.thingiverse.com/thing:3575 to make a demo part set to will show off how the gears mesh and turn.
I made this for a small show I attended, and gave them away "hot off the bot" to the attendees.
Gear_Set_Fine.stl | 6.8MB | |
Gear_Test_Set.scad | 20.6KB |