This is work in progress!!!

UPDATE: on request a set of STL are uploaded. They are only at BETA stage. Please do not ask features or corrections. Instead edit your copy of the 123D files.

A mini electric ducted fan (EDF) designed around the E-flite BL180 - 3000KV brushless motor. Look how small it is. (2s Lipo, 2A continuous, 3A for 10 seconds max.)

Main features are:

1. Center of momentum - Impeller is mounted on the outside of the BL rotor. This is not common, as most EDF's use a "inrunner" motor.
2. Load distribution - Impeller is a "pusher" and distributes the load on the whole rim of the BL rotor. If it was a "puller" it would put huge stress on the 3 screws.

First printed impeller was running without any vibrations!!!

Designed in Autodesk 123D.

Impeller must be printed with 100% fill for strength.
Use support material.

My current settings:
First layer: 0,25mm
Next layers: 0,15mm
PLA at 180 deg. C
Bed at 57 deg. C
"Slow speed" / Cooling fan with open window and freezing outside / tweaking and tweaking and tweaking of all params in Slic3r.

PS. You might want to process the STL file in meshlab prior to slicing.