Robo3D E3dv6 Fan shroud

This is a basic fan mount for a 40x40x10mm fan on a Robo3D which has been upgraded to a E3Dv6 hotend. Im using a derivative of this fan mount, http://www.thingiverse.com/thing:491434 and the file is attached. It was opened up and cleaned up to allow for the maximum airflow available, despite it being mostly covered by the extruder mount.

The shroud leaves about 1mm clear of the bed. The nozzle is designed to blow downward some and does not blow onto the Extruder nozzle. It has very little eff