This thing was made with Tinkercad. Edit it online https://www.tinkercad.com/things/iKvqGgIAw2t

Thank you zefram! If you haven't seen him he designs some awesome stuff!

http://www.thingiverse.com/thing:44536
Link to zefram's original gears

Print out the plaque, then print the other gears and parts from zefram's planetary gear set and assemble them. zefram designed the parts for the gear set so thank you!