Thingiverse

Braced Pennyweight Spiral Fidget by Grantisimo
by Thingiverse
Last crawled date: 4 years, 2 months ago
Braced spiral tri-spinner. Small design brings the arms in ~3 mm. Uses a 608 bearing and is weighted with 15 US cents. Tolerances are exacting and shouldn't need any glue to hold pennies or bearing in place. Posted the SKP file if you want to edit to fit a different coin.