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  "path": "/2026/05/18/how-to-make-steel-that-breathes/",
  "publishedAt": "2026-05-18T17:00:21.000Z",
  "site": "https://hackaday.com",
  "tags": [
    "3d Printer hacks",
    "Hackaday Columns",
    "3d printed injection mold",
    "breathable mold steel",
    "breathable steel",
    "injection molding",
    "mold",
    "mold steel",
    "porosity",
    "porous",
    "steel",
    "…read more"
  ],
  "textContent": "There are plenty of porous materials out there that we’re all readily familiar with. Fabrics and wood are great examples, allowing liquids or gases to pass through to a certain …read more",
  "title": "How To Make Steel That Breathes"
}