Show HN: A 2mm micro-bearing ring that spins like a real fidget spinner

My motivation was pretty simple: every “spinning ring” I tried felt a bit fake. They don’t actually spin — not like a real bearing. So I wanted to see if I could make one that truly does. At the end of the day it’s still just a ring. A small, minimal piece of jewelry. But it happens to hide a tiny bearing that can hit around 800 RPM with a single flick. That contrast is what makes it fun. The way I think about it is this: it’s like a normal-looking car that quietly turns out to fly. Nothing loud or showy — until you decide to reveal what it can actually do. If you’ve used a good fidget spinner for focus or stress, the feeling is similar. This is basically that experience compressed into a silent, smooth, 2mm-thick ring you can wear without thinking about it. The D20 idea grew out of that. It’s not the main point — just a side effect of the spin being clean and consistent. The reactions have been funny. As a ring, some people say it’s “too plain.” As a fidget spinner, it’s “not extreme enough.” As a D20, it’s “not official enough.” That’s what happens when something lands between categories. To me it’s simply a pared-down version of all three. If I wanted something louder, flashier, or more decorative, that’s easy to explore later. This first version is about getting the core idea right: a real, precise spin inside a clean 2mm ring. Once that foundation works, the rest — styling, variants, whatever comes next — is straightforward. Hope that gives a clearer sense of what I was trying to do. Demo video (just the mechanism in motion): https://vimeo.com/1139679503 https://vimeo.com/1139679503 More Info: https://spinity.co/ https://spinity.co/