Wanhao Duplicator 6 (D6) extruder motor and drive block fan duct

I was always worried about how hot the extruder motor, front plate and the drive block get during printing process (especially at 260C printing temp), so designed this little thingy to improve the situation.
You will need the plate, standard 40mm fan and 2 screws long enough to hold the sandwich in one piece =)
Fan is wired in parallel with cold end fan.

The construction does not limit printing area in any way, even with top cover installed, but the tolerances are tight, so it way vary on