u/Murky_Investment9176

Show and not tell.
The Jig Settings are the consequences of the underlying geometry.
It also gives me the flat pattern and DXF for fabrication.

PC fan 1800 RPM to 6:1 belt reduction to 40:1 worm gearbox =7.5 rpm output. Total 240:1 reduction.

PC fan 1800 RPM to 6:1 belt reduction to 40:1 worm gearbox = 7.5 RPM output. Fully 3D printed and running without bearings.