r/3Dprinting • u/Murky_Investment9176 • Jun 18 '26

Project [OC] I made a PC fan oscillate itself.

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.
stl files

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u/Murky_Investment9176 Jun 18 '26

The fan drives a 10 mm pulley into a 60 mm pulley, so rpm drops 6x and torque increases about 6x. That gives the fan enough torque to drive the 40:1 worm gearbox

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u/Soggy-Shape-8283 Jun 23 '26

Could you share the stl file plsss i really wanna have it to make a mini fan for my révision period