Better version: http://www.thingiverse.com/thing:999486 I remixed this for better strength and airflow. I also used a couple of small spacers to raise the fan height because it was crushing the wire from the laser and I wanted to route the cable a certain way. I users zip ties to route the cable along a path that doesn't block airflow... Problem on Flashforge Creator pro... fan hits front when all the way forward... back to the drawing board