Work · alternatives · 2026
24 alternatives to I engineered a 2mm micro-bearing D20 ring that free-spin for 20 seconds
Over the past few months I’ve been experimenting with how small a functional bearing-based mechanism can get while still feeling smooth, durable, and useful. This project started from a simple question: How thin can a real, free-spinning bearing be while still handling continuous rotation? Most “spinner rings” you see online cheat by simulating rotation — there’s no real bearing, just loose tolerance metal sliding on metal. True micro-bearing rotation needs precision, tight tolerances, and high surface finish, which is difficult when everything needs to be wearable on a finger. So I tried to…
This is a wearable stainless steel ring featuring a genuine 2mm-thick micro-bearing mechanism with 20 steel balls that spin freely for over 20 seconds. Unlike typical spinner rings that rely on loose metal-on-metal… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.
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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…
Dec 2025 · its alternatives →
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Precision-built calm you can wear — smooth endlessly ring
Dec 2025 · numeno.co · its alternatives →
- 3
3D Printed Cycloidal Gearbox . Contribute to tom-ilan/cycloidal_gearbox development by creating an account on GitHub.
Aug 2026 · github.com · its alternatives →
- 4
Open-source digital stylus using camera tracking and inertial measurements - Jcparkyn/dpoint
2023 · github.com · its alternatives →
- 5
After years of making screwdrivers and teaching people to repair electronics, we just made our first electronic tool. It's been a journey for us to build while hewing to our repairable principles. We're really excited about it. It's a USB-C powered soldering iron and smart battery power hub. Super repairable, of course. Our goal is to make soldering so easy everyone can do it: https://www.ifixit.com/fixhub We didn’t want to make just another iron, so we spent years sweating the details and crafting something that met our exacting standards. This is a high-performance iron: it…
2024 · hackaday.com · its alternatives →
- 6
I bet you didn't knew you can use modelling clay (as opposed to 3d printing) to make nice devices by hand :)
2025 · github.com · its alternatives →
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Oura Ring 5▲319The world’s smallest smart ring, now even better
May 2026 · ouraring.com · its alternatives →
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- 9AS
29d ago · nh2.me · its alternatives →
- 10
High-speed rotation of a professional-grade spinner.
Jul 2026 · motivationnyou.com · its alternatives →
- 11
Never be bored again at your standing desk
2021 · fidgity.com · its alternatives →
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100% metal, high-quality raw materials, spin for 60 seconds
2019 · kickstarter.com · its alternatives →
- 14
Ratchet Ring: a Tool For Satisfying Stimulation
2022 · projectratchet.com · its alternatives →
- 15
Designing is free and gives you a breakdown of material choices and costs, then you can get a quote if you want to buy the ring. I'm working with around 50 jewellers in London and the UK's Jewellery Quarter but I think just designing a ring is pretty nice.
2025 · hispi.app · its alternatives →
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- 17IA
2017 · grondilu.github.io · its alternatives →
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Reliable China Precision Bearing Manufacturer&Supplier- LKPB
Jul 2026 · lkpbearing.com · its alternatives →
- 20
360° Transmission Solution
Jun 2026 · customslipring.com · its alternatives →
- 21
Spin the Fortune Wheel faster
2025 · chromewebstore.google.com · its alternatives →
- 22
Are you ready to challenge yourself?
2020 · play.google.com · its alternatives →
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'Tripod' that can be fastened to cylinder
2016 · indiegogo.com · its alternatives →
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- A 2mm micro-bearing ring that spins like a real fidget spinner alternatives
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- I've built a tiny hand-held keyboard alternatives
Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →