25 mm Fan support for M3D Head (to cool the extruder motor)

The M3D printer has several conception issues. One of them is that the extruder motor is not enough cooled. As a result, the extruder motor stops running during prints, giving lots of failures for large prints (higher than 10 mm ...). As some guys on the forum explained, a fan can be attached to the head using some tape: it works but its not "clean" and time proof: that's why I designed this part (you'll find the FreeCAD source files, or you may just download the STL file).
This support allows