Jet Engine Desk Fan (V2.1)

A desk fan inspired by a jet engine.
This version never worked well and now there's a new version (V3) that actually works so DON'T PRINT THIS! The new version is here: https://www.thingiverse.com/thing:4897735

This is a prototype, it needs some more tweaking before it's really usable but even though you SHOULD NOT PRINT IT I'm leaving it up in case any of the files are useful.
This version is working, it's relatively quiet and quite pleasant (although not very powerful) but it gets far too hot due to inadequate motor cooling.

The fan needs a shaded pole induction motor from a desk fan (mine cost £10 from Argos) which drives a centrifugal compressor (found on early jet engines and turboprop/turboshaft engines now). The compressor pushes air through the small gap around the shroud.
All made in OpenSCAD, latest code on my Github (https://github.com/pittance)