This fanduct is intended to be used with the Mendel90 3D printer, a e3d v5 or similar hotend, and a 50mm centrifugal fan (blower).
The fanduct is designed to be easily printable without support.
I designed it with OpenSCAD, for this to be easily customizable.
It works really fine for me, I hope it would be useful to you :)
On the picture: printed in PLA, 0.2mm layer.