Printrbot Play 30mm Fan Shroud

This is a fan shroud designed for the 30mm stock fan on the Printrbot Play. I knocked this one together after noticing that a [similar fan shroud](http://www.thingiverse.com/thing:932091/) for the Printrbot Play by [Andy Leer](http://www.thingiverse.com/andyleer/about) was no longer available on Thingiverse.

This is based on a printed version of Andy Leer's fan shroud, and the dimensions and general design are close to the 3D printed version I had. Oddly enough, I deleted the gcode and stl af