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  "path": "/2026/05/07/3d-printed-train-whistles-sound-out-at-full-scale/",
  "publishedAt": "2026-05-07T20:00:36.000Z",
  "site": "https://hackaday.com",
  "tags": [
    "3d Printer hacks",
    "Musical Hacks",
    "3d printed",
    "3d printed musical instruments",
    "steam trains",
    "whistle",
    "…read more"
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  "textContent": "The age of steam is long gone, but there are few railfans who don’t have a soft spot for the old rolling kettles. So you’d best believe when [AeroKoi] talks …read more",
  "title": "3D Printed Train Whistles Sound Out at Full Scale"
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