Ask HN: Do smooth, wearable spinning rings (fidget-spinners) exist?
I’ve searched everywhere and only found:
“spinner rings” with friction-based outer bands
cheap Amazon versions where the rotating part falls off
designs that spin for only a few seconds
heavy or bulky rings that don’t feel wearable
What I’m looking for is something that:
is comfortable enough for daily wear
can spin cleanly with a flick
has low friction (ideally bearing-like smoothness)
stays intact longer than a few days
doesn’t click or ratchet — just smooth rotation
Does a device like this actually exist? Or is there a mechanical limitation that makes “fidget-spinner-level smoothness” hard to achieve in a ring form factor?
I’d love insight from anyone who has tried similar designs, knows materials to avoid, or understands the engineering constraints of making a tiny wearable rotor.