展示HN：一个直径2毫米的微型轴承环，像真正的指尖陀螺一样旋转
我的动机很简单：我尝试过的每一个“旋转戒指”都感觉有些虚假。它们实际上并不旋转——不像真正的轴承。因此，我想看看能否制作一个真正能旋转的戒指。
归根结底，它仍然只是一个戒指，一件小巧、简约的珠宝。但它恰好隐藏了一个微小的轴承，轻轻一 flick 就能达到约 800 转/分钟的速度。正是这种对比让它变得有趣。
我对它的理解是这样的：它就像一辆外表普通的汽车，悄悄地却能飞起来。没有喧闹或炫耀——直到你决定揭示它真正的能力。
如果你曾使用过好的指尖陀螺来集中注意力或缓解压力，感觉是类似的。这基本上就是那种体验，压缩成一个无声、顺滑、厚度为 2 毫米的戒指，你可以不经意地佩戴。
D20 的想法就是从这个基础上发展而来的。这并不是主要目的——只是旋转干净且稳定的副产品。
反应很有趣。作为戒指，有些人说它“太简单”。作为指尖陀螺，它“还不够极端”。作为 D20，它“还不够官方”。这就是当某样东西落在类别之间时发生的事情。
对我来说，它只是这三者的简化版。如果我想要更响亮、更炫目或更具装饰性的东西，那以后很容易再去探索。这个初始版本的重点是把核心理念做好：在一个干净的 2 毫米戒指内实现真正、精准的旋转。
一旦这个基础工作正常，其余的——造型、变种、接下来要做的任何事情——都将变得简单明了。
希望这能更清楚地传达我想要做的事情。
演示视频（仅展示机制运作）：
<a href="https://vimeo.com/1139679503" rel="nofollow">https://vimeo.com/1139679503</a>
更多信息：<a href="https://spinity.co/" rel="nofollow">https://spinity.co/</a>
查看原文
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.<p>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.<p>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.<p>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.<p>The D20 idea grew out of that.
It’s not the main point — just a side effect of the spin being clean and consistent.<p>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.<p>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.<p>Once that foundation works, the rest — styling, variants, whatever comes next — is straightforward.<p>Hope that gives a clearer sense of what I was trying to do.<p>Demo video (just the mechanism in motion):
<a href="https://vimeo.com/1139679503" rel="nofollow">https://vimeo.com/1139679503</a>
More Info: <a href="https://spinity.co/" rel="nofollow">https://spinity.co/</a>