Robo C2 R2 Precision Air Flow fan duct attachment

This is the UPDATE to the old version fan duct mod found [here](https://www.thingiverse.com/thing:2622310)

This is a mod for a single extruder on a Robo R2 or C2 for precision airflow (PAF) to cool your 3d printed parts, directing airflow better than the stock fan duct, all using the existing fan duct hardware. Installation is only 2 screws in and out, which makes this version much more simple and easy to install.

A full tutorial on [how to install this is here](https://help.robo3d.com/hc/