These are some intake ducts I designed for a Printrbot Simple Metal, but you should be able to use them on any 40mm fan. I don't expect much in terms of a performance increase from them - I just thought it would look cool, and act as a decent "grill" of sorts for the intake without any adverse effects.
Personally, I prefer the one with the single support arm, but I've provided both!
My exhaust duct is from here:
http://www.thingiverse.com/thing:356001
Please feel free to add pictures of your "Makes"!
| Fan_duct_-_intake.STL | 543.0KB | |
| Fan_duct_-_intake_-_single_support.STL | 1.1MB |
