"Jet Engine" Desk Fan: Quick Assembly Guide
Channel: Chris Lynas
Date: 2021-07-28

This is a very quick guide on the assembly of the main parts of my 3d printed "Jet Engine" desk fan - it uses a centrifugal compressor to move the air and is powered by a brushless DC motor. If you'd like to make one the files are all available on my Thingiverse (https://www.thingiverse.com/thing:4897735) and Prusaprinters (https://www.prusaprinters.org/prints/70673-jet-engine-desk-fan-v3) pages.

The CAD is a bit of a patchwork: 2D profiles were designed in SolidEdge 2D drafting, these were imported into Fusion360 for 'lathing' around the central axis, exports are finally processed for fastenings in OpenSCAD with other parts like the compressor blades being added here also - I am very aware that this is a terrible workflow but I am very bad at CAD. The STLs from the Fusion360 export are included in the uploads, as is the OpenSCAD file if you'd like to make changes from that point.

Is it a good fan? In short: not really

It works, and I think it looks nice but it's quite noisy (this will vary based on how well balanced your rotor print is) so I only use it when it's really hot.