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The Fully 3D-Printed Helical Herringbone Gear Bearing Fidget Spinner

The Fully 3D-Printed Helical Herringbone Gear Bearing Fidget Spinner

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by DylanTruongPiedmont October 10, 2020

This is your standard, three-lobed fidget spinner with a twist. Literally; the gears are helical and have a herringbone pattern to keep them in line with the outer rings. I was inspired by emmett's gear bearing, but mine is original and quite a bit smaller. The project grew from my desire to design a small, 3D-printable bearing that was reasonably effective. I found that the best way to demonstrate its effectiveness was to give it a higher mass moment of inertia by putting giving it some lobes. Thus, The Fully 3D-Printed Helical Herringbone Gear Bearing Fidget Spinner™ was born.

I hear that it may be a bit large for most hands, but it suits mine just fine. If you would like a smaller variant, feel free to leave a comment requesting one, and I'll get to work on it ASAP. Printing it from the Prusa, it required no post-processing, and worked right off the build plate.

Print Settings

Printer brand: Prusa

Printer: I3 MK3S

Rafts: No

Supports: No

Resolution: 0.1

Infill: 15%

Filament brand: Prusament

Filament color: Galaxy Silver

Filament material: PLA

How I Designed This

 

I used this nifty add-in for generating helical gears by Ross Korsky. The rest was arranging, sketching, and filleting.

Enjoy!

 

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