EDF prototype

thingiverse

A work-in-progress mini electric ducted fan (EDF) featuring E-flite BL180-3000KV brushless motor has been developed. The BETA stage STL set is now available for download, but users are advised to edit their copies of the 123D files instead of requesting features or corrections. This unique EDF design showcases an uncommon center of momentum with the impeller mounted on the outside of the BL rotor and a load distribution system where the pusher-style impeller distributes load across the entire rim of the BL rotor, avoiding stress on the three screws. The first printed impeller ran smoothly without vibrations. Autodesk 123D was used for designing this EDF. For optimal strength, the impeller must be printed with 100% fill. Use support material during printing. Recommended print settings include a first layer height of 0.25mm, subsequent layers at 0.15mm, and PLA filament extruded at 180°C on a bed preheated to 57°C. Printing under slow-speed conditions with the cooling fan set to open window and freezing outside, while tweaking all parameters in Slic3r, can further enhance the print quality. Additionally, processing the STL file in Meshlab prior to slicing is suggested.