40mm fan adapter for 50mm radial fan

This is a fan duct so I can use my 40mm fan with the cii cooler (http://www.thingiverse.com/thing:2004629), which is designed for a 50mm radial fan.

It's an adaption of my previous duct (http://www.thingiverse.com/thing:2225321), and fitted better at first printing, despite it cracking my too-brittle cooler (which I'll re-print properly if the cooler works out for my machine).

Fan plate source code from http://www.thingiverse.com/thing:735038

Please note that the adapter should be used only until you get a radial fan; the cooler is designed for a fan that can create a bit of pressure, and axial fans don't move enough air to make the cooler work as designed (see the comments on the cooler thing).

Print Settings

Printer:

Cocoon Balco KOG678 (i3 clone)

Rafts:

No

Yes

Resolution:

0.25mm

20%