{
 "version": "2026-10-20",
 "license": "Dimension sheets are written by Xem Studio from the cited sources and are free to use (CC BY 4.0, attribute 'Xem Studio'). Linked files belong to their publishers under the license shown; Xem Studio does not host them. 'license_verified: false' means the license shown is from memory or the publisher's page as last read and should be confirmed at the link before commercial use.",
 "slug": "printable-tri-clamp-lids-caps",
 "name": "Printable tri-clamp (45°): dome lids and ported caps",
 "kind": "hardware",
 "category": "Hardware",
 "group": "Printable tri-clamp",
 "year": null,
 "question": "Can I 3D print a tri-clamp lid with ports?",
 "tags": [
  "lid",
  "dome",
  "cap",
  "3d printable",
  "supportless",
  "print friendly",
  "45 degree",
  "sanitary",
  "tri-clamp",
  "clamp fitting",
  "brewing",
  "homebrew"
 ],
 "aliases": [
  "printable tri clamp lid",
  "3d printed fermenter lid tri clamp"
 ],
 "overall_mm": {
  "length": null,
  "width": null,
  "height": null
 },
 "official_cad": false,
 "xem_status": "free-files",
 "les": false,
 "free_files": 16,
 "url": "https://xemstudio.com/objects/printable-tri-clamp-lids-caps/",
 "sheet_txt": "https://xemstudio.com/objects/printable-tri-clamp-lids-caps/sheet.txt",
 "sheet": {
  "basis": "Xem Studio design: the dome lids and ported caps of the standard pages with 45° rims",
  "overall_mm": {
   "length": null,
   "width": null,
   "height": null
  },
  "notes": [
   "Lids print face down; the dome and ports grow up from the face.",
   "Printable tri-clamp: the ISO 2852 face and gasket groove are exactly standard, only the back cone behind each rim is 45° instead of 20°, so no rim overhangs more than 45° from vertical in any print orientation. Join these with the 45° clamps (printable-tri-clamp-clamps) and standard Type B gaskets; a 45° clamp fits only 45° rims, so keep a run all 45°. A 45° cone turns clamp force into face force at 1 : 1 (a 20° cone at 2.7 : 1), so tighten the clamp bolts harder or use M6.",
   "Print orientation: straight parts face down; elbows, tees and crosses with one face down; horizontal bores bridge their top, so keep them small or add a light tree support inside.",
   "Every clamp face is the ISO 2852 profile used across this site: 2.85 mm rim, flat face with the gasket groove (K 1.6 deep, R3 1.2 bottom, 23° walls, P2 0.8 edges) on C2, 20° back cone. Flange C3 / groove C2 / tube OD × wall, mm: ½–¾ in 25.0 / 20.4 (derived) / 12.7–19.05 × 1.65; 1–1½ in 50.5 / 43.5 / 25.4–38.1 × 1.65; 2 in 64.0 / 56.5 / 50.8 × 1.65; 2½ in 77.5 / 70.5 / 63.5 × 1.65; 3 in 91.0 / 83.5 / 76.2 × 1.65; 4 in 119.0 / 110.0 / 101.6 × 2.11; 6 in 166.9 (6.570 in) / 156.5 / 152.4 × 2.77; 8 in 217.7 (8.570 in) / 207.0 / 203.2 × 2.77; 10 in 268.5 / 261.0 / 254.0 × 3.40; 12 in 319.3 / 311.8 / 304.8 × 3.40."
  ],
  "table": {
   "columns": [
    "size_in",
    "face_to_crown_mm"
   ],
   "rows": [
    [
     "1½",
     18.5
    ],
    [
     "2",
     21.1
    ],
    [
     "3",
     26.2
    ],
    [
     "4",
     31.8
    ],
    [
     "6",
     38.9
    ],
    [
     "8",
     47.5
    ]
   ]
  }
 },
 "sheet_text": "Printable tri-clamp (45°): dome lids and ported caps — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/printable-tri-clamp-lids-caps/  (CC BY 4.0)\nBasis: Xem Studio design: the dome lids and ported caps of the standard pages with 45° rims\nCatalog version: 2026-10-20\n\nSizes: see table below\n- Lids print face down; the dome and ports grow up from the face.\n- Printable tri-clamp: the ISO 2852 face and gasket groove are exactly standard, only the back cone behind each rim is 45° instead of 20°, so no rim overhangs more than 45° from vertical in any print orientation. Join these with the 45° clamps (printable-tri-clamp-clamps) and standard Type B gaskets; a 45° clamp fits only 45° rims, so keep a run all 45°. A 45° cone turns clamp force into face force at 1 : 1 (a 20° cone at 2.7 : 1), so tighten the clamp bolts harder or use M6.\n- Print orientation: straight parts face down; elbows, tees and crosses with one face down; horizontal bores bridge their top, so keep them small or add a light tree support inside.\n- Every clamp face is the ISO 2852 profile used across this site: 2.85 mm rim, flat face with the gasket groove (K 1.6 deep, R3 1.2 bottom, 23° walls, P2 0.8 edges) on C2, 20° back cone. Flange C3 / groove C2 / tube OD × wall, mm: ½–¾ in 25.0 / 20.4 (derived) / 12.7–19.05 × 1.65; 1–1½ in 50.5 / 43.5 / 25.4–38.1 × 1.65; 2 in 64.0 / 56.5 / 50.8 × 1.65; 2½ in 77.5 / 70.5 / 63.5 × 1.65; 3 in 91.0 / 83.5 / 76.2 × 1.65; 4 in 119.0 / 110.0 / 101.6 × 2.11; 6 in 166.9 (6.570 in) / 156.5 / 152.4 × 2.77; 8 in 217.7 (8.570 in) / 207.0 / 203.2 × 2.77; 10 in 268.5 / 261.0 / 254.0 × 3.40; 12 in 319.3 / 311.8 / 304.8 × 3.40.\n\nsize_in  face_to_crown_mm\n1½  18.5\n2  21.1\n3  26.2\n4  31.8\n6  38.9\n8  47.5\n\nFiles elsewhere (not hosted by Xem Studio; license as stated by the publisher):\n- ASME: B1.20.1 Pipe threads, general purpose (NPT): major diameter, L2, tap drill; B16.11 forged fittings (Class 3000 couplings); B36.10 Sch 40 bore — standard — ASME; dimensions are facts [verify license at link] — https://www.asme.org/codes-standards/find-codes-standards/b1-20-1-pipe-threads-general-purpose-inch\n- GW Kent: Tri-clamp fittings guide: tube OD, flange OD and ID per size to 12 in; solid cap thickness — web — publisher's guide; dimensions cited — https://www.gwkent.com/triclamp-guide\n- Rubber Fab: Tri-Clamp gasket dimensional chart: gasket ID, OD and bead diameter per size (2 in bead 2.22 in / 56.50 mm, 1.5 in 1.71 / 43.50, 3 in 3.29 / 83.50) — PDF — maker chart; dimensions are facts [verify license at link] — https://shop.andersonprocess.com/media/assets/product/documents/rubber-fab-tri-clamp-dimensions.pdf\n\nFree files (CC BY 4.0, Xem Studio; STEP + STL, 16 parts): https://xemstudio.com/files/hardware/printable-tri-clamp-lids-caps/index.json\nAPI: https://xemstudio.com/api/geometry?object=printable-tri-clamp-lids-caps\n",
 "sources": [
  {
   "publisher": "ASME",
   "title": "B1.20.1 Pipe threads, general purpose (NPT): major diameter, L2, tap drill; B16.11 forged fittings (Class 3000 couplings); B36.10 Sch 40 bore",
   "url": "https://www.asme.org/codes-standards/find-codes-standards/b1-20-1-pipe-threads-general-purpose-inch",
   "formats": [
    "standard"
   ],
   "license": "ASME; dimensions are facts",
   "license_verified": false,
   "hosted": false
  },
  {
   "publisher": "GW Kent",
   "title": "Tri-clamp fittings guide: tube OD, flange OD and ID per size to 12 in; solid cap thickness",
   "url": "https://www.gwkent.com/triclamp-guide",
   "formats": [
    "web"
   ],
   "license": "publisher's guide; dimensions cited",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "Rubber Fab",
   "title": "Tri-Clamp gasket dimensional chart: gasket ID, OD and bead diameter per size (2 in bead 2.22 in / 56.50 mm, 1.5 in 1.71 / 43.50, 3 in 3.29 / 83.50)",
   "url": "https://shop.andersonprocess.com/media/assets/product/documents/rubber-fab-tri-clamp-dimensions.pdf",
   "formats": [
    "PDF"
   ],
   "license": "maker chart; dimensions are facts",
   "license_verified": false,
   "hosted": false
  }
 ],
 "xem": {
  "status": "free-files",
  "sheet_free": true,
  "mesh_price_usd": null,
  "step_price_usd": null,
  "tolerance_mm": null
 },
 "related": [
  "tri-clamp-45-degree-printable",
  "printable-tri-clamp-clamps",
  "printable-tri-clamp-elbows",
  "printable-tri-clamp-tees-crosses",
  "printable-tri-clamp-reducers",
  "printable-tri-clamp-adapters"
 ],
 "fits": [],
 "dimensions": "exact (nominal, no printing tolerance)",
 "dimension_rule": "All geometry on Xem Studio is exact (nominal, true size) with no printing tolerance. Where a part meets another part, the object lists its mating features (feature, exact size, what it mates with, fit class: press, slide, run, socket, clamp or designed). Apply your process's allowance to those features only; 'designed' gaps are part of the design and stay as drawn.",
 "mating": [],
 "faq": [
  {
   "q": "Dome or flat?",
   "a": "The dome prints without support face down; a flat cap does too."
  }
 ],
 "files_license": null,
 "offers": [
  {
   "file": "dome-lid-45cone-1.5in",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/printable-tri-clamp-lids-caps/dome-lid-45cone-1.5in.step",
   "stl": "https://xemstudio.com/files/hardware/printable-tri-clamp-lids-caps/dome-lid-45cone-1.5in.stl",
   "note": "1½ in dome lid, 18.5 face to crown"
  },
  {
   "file": "dome-lid-45cone-2in",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/printable-tri-clamp-lids-caps/dome-lid-45cone-2in.step",
   "stl": "https://xemstudio.com/files/hardware/printable-tri-clamp-lids-caps/dome-lid-45cone-2in.stl",
   "note": "2 in dome lid, 21.1 face to crown"
  },
  {
   "file": "dome-lid-45cone-3in",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/printable-tri-clamp-lids-caps/dome-lid-45cone-3in.step",
   "stl": "https://xemstudio.com/files/hardware/printable-tri-clamp-lids-caps/dome-lid-45cone-3in.stl",
   "note": "3 in dome lid, 26.2 face to crown"
  },
  {
   "file": "dome-lid-45cone-4in",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/printable-tri-clamp-lids-caps/dome-lid-45cone-4in.step",
   "stl": "https://xemstudio.com/files/hardware/printable-tri-clamp-lids-caps/dome-lid-45cone-4in.stl",
   "note": "4 in dome lid, 31.8 face to crown"
  },
  {
   "file": "dome-lid-45cone-4in-1.5in-port",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/printable-tri-clamp-lids-caps/dome-lid-45cone-4in-1.5in-port.step",
   "stl": "https://xemstudio.com/files/hardware/printable-tri-clamp-lids-caps/dome-lid-45cone-4in-1.5in-port.stl",
   "note": "4 in dome lid with a 1½ in clamp port"
  },
  {
   "file": "dome-lid-45cone-6in",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/printable-tri-clamp-lids-caps/dome-lid-45cone-6in.step",
   "stl": "https://xemstudio.com/files/hardware/printable-tri-clamp-lids-caps/dome-lid-45cone-6in.stl",
   "note": "6 in dome lid, 38.9 face to crown"
  },
  {
   "file": "dome-lid-45cone-6in-1.5in-port",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/printable-tri-clamp-lids-caps/dome-lid-45cone-6in-1.5in-port.step",
   "stl": "https://xemstudio.com/files/hardware/printable-tri-clamp-lids-caps/dome-lid-45cone-6in-1.5in-port.stl",
   "note": "6 in dome lid with a 1½ in clamp port"
  },
  {
   "file": "dome-lid-45cone-8in",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/printable-tri-clamp-lids-caps/dome-lid-45cone-8in.step",
   "stl": "https://xemstudio.com/files/hardware/printable-tri-clamp-lids-caps/dome-lid-45cone-8in.stl",
   "note": "8 in dome lid, 47.5 face to crown"
  },
  {
   "file": "dome-lid-45cone-8in-1.5in-port",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/printable-tri-clamp-lids-caps/dome-lid-45cone-8in-1.5in-port.step",
   "stl": "https://xemstudio.com/files/hardware/printable-tri-clamp-lids-caps/dome-lid-45cone-8in-1.5in-port.stl",
   "note": "8 in dome lid with a 1½ in clamp port"
  },
  {
   "file": "cap-45cone-1.5in-1-4npt",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/printable-tri-clamp-lids-caps/cap-45cone-1.5in-1-4npt.step",
   "stl": "https://xemstudio.com/files/hardware/printable-tri-clamp-lids-caps/cap-45cone-1.5in-1-4npt.stl",
   "note": "1–1½ in cap with 1 4npt"
  },
  {
   "file": "cap-45cone-1.5in-1-2npt",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/printable-tri-clamp-lids-caps/cap-45cone-1.5in-1-2npt.step",
   "stl": "https://xemstudio.com/files/hardware/printable-tri-clamp-lids-caps/cap-45cone-1.5in-1-2npt.stl",
   "note": "1–1½ in cap with 1 2npt"
  },
  {
   "file": "cap-45cone-2in-1-2npt",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/printable-tri-clamp-lids-caps/cap-45cone-2in-1-2npt.step",
   "stl": "https://xemstudio.com/files/hardware/printable-tri-clamp-lids-caps/cap-45cone-2in-1-2npt.stl",
   "note": "2 in cap with 1 2npt"
  },
  {
   "file": "cap-45cone-1.5in-half-in-barb",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/printable-tri-clamp-lids-caps/cap-45cone-1.5in-half-in-barb.step",
   "stl": "https://xemstudio.com/files/hardware/printable-tri-clamp-lids-caps/cap-45cone-1.5in-half-in-barb.stl",
   "note": "1–1½ in cap with half in barb"
  },
  {
   "file": "cap-45cone-1.5in-grommet-hole-12.7",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/printable-tri-clamp-lids-caps/cap-45cone-1.5in-grommet-hole-12.7.step",
   "stl": "https://xemstudio.com/files/hardware/printable-tri-clamp-lids-caps/cap-45cone-1.5in-grommet-hole-12.7.stl",
   "note": "1–1½ in cap with grommet hole 12.7"
  },
  {
   "file": "cap-45cone-4in-1.5in-port",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/printable-tri-clamp-lids-caps/cap-45cone-4in-1.5in-port.step",
   "stl": "https://xemstudio.com/files/hardware/printable-tri-clamp-lids-caps/cap-45cone-4in-1.5in-port.stl",
   "note": "4 in cap with 1.5in port"
  },
  {
   "file": "cap-45cone-6in-1.5in-port",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/printable-tri-clamp-lids-caps/cap-45cone-6in-1.5in-port.step",
   "stl": "https://xemstudio.com/files/hardware/printable-tri-clamp-lids-caps/cap-45cone-6in-1.5in-port.stl",
   "note": "6 in cap with 1.5in port"
  }
 ],
 "markdown": "https://xemstudio.com/objects/printable-tri-clamp-lids-caps/index.md"
}