You can print this model to make my Valve Index headset cooling system that is operated by a manual pushbutton to control the fan speed, you can see the details of my version on Github
https://github.com/ItsVRK/valve-index-cooling.
The model was created by
JLIspace is licensed under the
Creative Commons - Attribution - Share Alike license. (minor changes were made to the model to make it printable via Shapeways)