The printed part of this fan mount was designed by Seth Sinnema of Aleph Objects. It's based on a fan mount submitted to the Lulzbot forum by user devzero (http://forum.lulzbot.com/viewtopic.php?f=16&t=261&start=10 , http://www.thingiverse.com/thing:147966). The design is released as CC-SA. Happy printing!