This is a fanduct expressly designed for Flyingbear printer.

It gives a better printing quality and control over the fan. The fan can be installed without any modification to the printer, simply substitute the original one with the printed one.
The air is pushed throughout 3 sides of the printed object, so it will warp less.

3d printing in ABS is suggested, but PLA will work as well.

Flyingbear

Doesn't Matter

Yes

Please print with no supports inside the fanduct. Enable supports only from the buildplate.