I've redrawn plasticWrap's nozzle fan design (http://www.thingiverse.com/thing:1106824) in Autodesk Inventor Pro 2016. Good to learn a bit about Inventor. I also tried as much as I can to make it parametric. This way it was easy to adapt and tweak the design for my printer.
The 2 most important changes are:
Now let's hope it does what it should do.
P.S. If someone has suggestions about what I could do better in Inventor or even with the design in general, please do not hesitate to comment or send me a message.
P.S. I used the simple photo background designed by slepcat (http://www.thingiverse.com/make:169958) to make the pictures.
-- edit --
I've added a new version without the cutout (notch) as requested by DutchDude. I also fixed a problem with an unsupported overhang.