Easy Print 40mm Fan Duct for Ultimaker

This is a fan duct I designed for my ultimaker. I needed a fan duct and a new fan, all I could source locally was a 40mm fan. And the other 40mm designs out there were designed in a way that the thicker high-rpm fan I ended up with wouldn't fit under the X carriage block when homing the X axis.

This design is inspired by those other designs, but revised to account for my needs. Hopefully someone else will find it useful.

I completely redesigned this one with several goals in mind:

- Su