请问HN：有没有将3D打印数据应用于物理表面的例子？
我想到了一种将少量数据编码到某种“磁盘”上的方法，使用3D打印作为基于丝材的存储机制。假设使用常见的3D打印机测量工具（例如床平整度调整工具）可以提供一种读取编码到表面数据的方法。
由于这似乎是一个相当知名的概念，虽然我在之前没有见过它应用于这个领域，但这个领域已经很大并且正在快速增长，我假设其他人也考虑过这个问题？我希望或许有人已经实现了类似的东西？
然后，显然，如果存在这样的概念验证，我会想知道是否有某种高级版本，使用专门的设备进行读取（可能还有写入/打印）。
无论如何，我只是出于好奇。我在考虑长期（超过一个世纪）的档案存储，或者仅以打印形式存储的加密密钥，没有数字副本。这些东西不需要大量存储，但对于静态维护至关重要。可能这并不适合这种用途，这也是我在搜索时没有找到太多相关信息的原因。但我只是想知道是否有人了解这方面的内容，以防它有其他用途。
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I had a thought about encoding a very small amount of data onto some kind of "disk" using 3D printing as the mechanism for filament-based storage. The assumption was that using common 3D printer measurement tools (like for bed-leveling) would provide a way to read back whatever data was encoded onto the surface.<p>Since that seems like a pretty well-known concept, crudely applied to a domain I haven't seen it in before - but is already large and growing fast - I'm assuming that others have thought of this? I was hoping maybe someone had implemented something like it?
And then, obviously, if that proof of concept exists, I'd wonder about some kind of advanced version that used specialized equipment for the reading (and possibly the writing/printing).<p>In any case, I'm just curious. I was thinking about long term (century +) archival storage, or encryption keys only stored as the print with no digital copies. Stuff that wouldn't need tons of storage, but would be crucial to maintain statically. It probably wouldn't be useful for that, which is why I assume I'm not finding much in my searches for it. But I was just wondering if anyone knew about it, in case there is stuff it's good for.