geneva-drive
This experiment creates a working, printable Geneva drive. The Geneva drive is constructed by printing two gears (a drive and a driven gear), a board, and two screws. The screws attach the gears to the board, while allowing the gears to spin around freely.
I actually printed this design, and it works very well!
Rendering
The resulting model (minus the screws) looks like this:
![Rendering of the models put together](https://github.com/unixpickle/model3d/raw/v0.2.22/examples/experiments/geneva_drive/rendering.png)
During the debugging stage, I also created a rendering of the gear profiles:
![Rendering of the profiles](https://github.com/unixpickle/model3d/raw/v0.2.22/examples/experiments/geneva_drive/rendering_profiles.svg)
The program also produces an animated GIF of the Geneva drive in operation. However, it is not included here to save space.