M3D Crane Quad top mount for 40mm fan.

Note: I have uploaded a version 2 of this model. The new one sits closer to the top of the extruder body but is also narrower to provide better clearance at the filament input ports. I have enlarged the holes for the M3 screws that hold the fan and did not have to chase these with a drill bit on the new version.

It seems to me that the small motors run hot on the Quad head. This is an effort to control the excess heat. Print in PETG as it is in direct contact with the part of the head it