Glowforge Air Duct

This is a simple air duct for the glowforge. The glowforge is not supposed to be hooked up to a window while not in use, so the movable piece is for convince.

Things to print:
* 1 x Duct with slit
* 1 x Slit
or
* 1 x Duct with no slit

The design can be found on onshape [here](https://cad.onshape.com/documents/ee29a0301f51c934ca90e0b8/w/f1ce2fa7ee12a1e8413a8fa4/e/9a8bca3d312f3c141b30be34)