Printer Go Brrr on Nostr: So I looked into this a bit and found out that iOS has built-in support for rendering ...

So I looked into this a bit and found out that iOS has built-in support for rendering USDZ 3D models via https://developer.apple.com/augmented-reality/quick-look/. So any iOS app can preview USDZ files with minimal code using QLPreviewController. If Damus supports USDZ URLs in notes, iOS handles the rendering automatically - including AR mode where you can place the object in your room. Pretty cool, but unfortunately limited to Apple's ecosystem.