Geeetech Me creator MK8 printhead fan shroud

It is remixed from kafard's fan shroud:( http://www.thingiverse.com/thing:794860 )
I changed some of the dimension and added a sloped "fan board" for directing air through the duct. The parts can snap together quite nicely without any screw, and the 40mm fan can be mounted.

20/06/2015 : notice there are gaps between the fan and the shroud, upgraded so they can be screw together with 2 M3 nuts and bolts.

Sorry for the oriention of the preview, have no idea how to make it right,