{
 "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": "mug-ltd-top-plate",
 "name": "Mug LTD top plate Ø90 with rod guide and a 5 mL glass syringe socket",
 "kind": "hardware",
 "category": "Hardware",
 "group": "Stirling & thermoacoustic",
 "year": null,
 "question": "How do I mount a glass syringe on a small LTD Stirling engine top plate?",
 "tags": [
  "ltd",
  "top plate",
  "syringe",
  "glass syringe",
  "stirling",
  "long earth society"
 ],
 "aliases": [
  "ltd stirling top plate glass syringe",
  "mug stirling top plate"
 ],
 "overall_mm": {
  "length": null,
  "width": null,
  "height": null
 },
 "official_cad": false,
 "xem_status": "free-files",
 "les": true,
 "free_files": 1,
 "url": "https://xemstudio.com/objects/mug-ltd-top-plate/",
 "sheet_txt": "https://xemstudio.com/objects/mug-ltd-top-plate/sheet.txt",
 "sheet": {
  "basis": "My geometry: the LTD kit's top plate scaled to Ø90, with the socket drawn at the 5 mL glass barrel's published OD (Ø15.40, KD Scientific)",
  "overall_mm": {
   "length": null,
   "width": null,
   "height": null
  },
  "notes": [
   "Rod guide: Ø2 bore 13 long through the 3 mm plate and the Ø20 × 10 boss; the 2 mm displacer rod runs in it (that close fit is the seal).",
   "Syringe socket at x 35: Ø15.40 × 12 deep in a Ø18.4 boss, floor 9 above the plate's underside; the barrel's end sits on the floor and its Luer cone (7.5 long) stands in the Ø5 port below, its tip 1.5 above the plate's underside, so nothing reaches into the chamber. The port's outer edge is at R37.5, inside the Ø76 bore.",
   "7 × Ø3.4: five chamber screws on R41 and two for the crank pedestal's foot at (35.5, ±20.5)."
  ],
  "table": {
   "columns": [
    "feature",
    "size_mm"
   ],
   "rows": [
    [
     "plate",
     "Ø90 × 3"
    ],
    [
     "rod guide",
     "Ø2 × 13"
    ],
    [
     "syringe socket",
     "Ø15.40 × 12, floor at 9, x 35"
    ],
    [
     "port",
     "Ø5"
    ]
   ]
  }
 },
 "sheet_text": "Mug LTD top plate Ø90 with rod guide and a 5 mL glass syringe socket — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/mug-ltd-top-plate/  (CC BY 4.0)\nBasis: My geometry: the LTD kit's top plate scaled to Ø90, with the socket drawn at the 5 mL glass barrel's published OD (Ø15.40, KD Scientific)\nCatalog version: 2026-10-20\n\nSizes: see table below\n- Rod guide: Ø2 bore 13 long through the 3 mm plate and the Ø20 × 10 boss; the 2 mm displacer rod runs in it (that close fit is the seal).\n- Syringe socket at x 35: Ø15.40 × 12 deep in a Ø18.4 boss, floor 9 above the plate's underside; the barrel's end sits on the floor and its Luer cone (7.5 long) stands in the Ø5 port below, its tip 1.5 above the plate's underside, so nothing reaches into the chamber. The port's outer edge is at R37.5, inside the Ø76 bore.\n- 7 × Ø3.4: five chamber screws on R41 and two for the crank pedestal's foot at (35.5, ±20.5).\n\nfeature  size_mm\nplate  Ø90 × 3\nrod guide  Ø2 × 13\nsyringe socket  Ø15.40 × 12, floor at 9, x 35\nport  Ø5\n\nFiles elsewhere (not hosted by Xem Studio; license as stated by the publisher):\n- Atlanta Vinyl Store: Premium 11 oz sublimation mug: 3.75 in H × 3.25 in D — web — listing [verify license at link] — https://atlantavinylstore.com/products/premium-11oz-sublimation-mugs\n- James R. Senft: An Introduction to Low Temperature Differential Stirling Engines — book — Moriya Press [verify license at link] — https://www.stirlingengine.com/\n- Wikipedia: Stirling engine — web — CC BY-SA 4.0 (text) — https://en.wikipedia.org/wiki/Stirling_engine\n- KD Scientific: Full Line of Glass Syringes, rev. A (order codes 78-0871 to 78-0880): piston OD, barrel OD D1, barrel collar D2, piston collar D3, length L — PDF — manufacturer datasheet [verify license at link] — https://www.kdscientific.com/media/brochures/KDS%20Glass%20Syringe%20Datasheet.pdf\n- Long Earth Society: Engine builds — web, video — LES site — https://longearthsociety.com/engineering/\n\nFree files (CC BY 4.0, Xem Studio; STEP + STL, 1 parts): https://xemstudio.com/files/hardware/mug-ltd-top-plate/index.json\nAPI: https://xemstudio.com/api/geometry?object=mug-ltd-top-plate\n",
 "sources": [
  {
   "publisher": "Atlanta Vinyl Store",
   "title": "Premium 11 oz sublimation mug: 3.75 in H × 3.25 in D",
   "url": "https://atlantavinylstore.com/products/premium-11oz-sublimation-mugs",
   "formats": [
    "web"
   ],
   "license": "listing",
   "license_verified": false,
   "hosted": false
  },
  {
   "publisher": "James R. Senft",
   "title": "An Introduction to Low Temperature Differential Stirling Engines",
   "url": "https://www.stirlingengine.com/",
   "formats": [
    "book"
   ],
   "license": "Moriya Press",
   "license_verified": false,
   "hosted": false
  },
  {
   "publisher": "Wikipedia",
   "title": "Stirling engine",
   "url": "https://en.wikipedia.org/wiki/Stirling_engine",
   "formats": [
    "web"
   ],
   "license": "CC BY-SA 4.0 (text)",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "KD Scientific",
   "title": "Full Line of Glass Syringes, rev. A (order codes 78-0871 to 78-0880): piston OD, barrel OD D1, barrel collar D2, piston collar D3, length L",
   "url": "https://www.kdscientific.com/media/brochures/KDS%20Glass%20Syringe%20Datasheet.pdf",
   "formats": [
    "PDF"
   ],
   "license": "manufacturer datasheet",
   "license_verified": false,
   "hosted": false
  },
  {
   "publisher": "Long Earth Society",
   "title": "Engine builds",
   "url": "https://longearthsociety.com/engineering/",
   "formats": [
    "web",
    "video"
   ],
   "license": "LES site",
   "license_verified": true,
   "hosted": false
  }
 ],
 "xem": {
  "status": "free-files",
  "sheet_free": true,
  "mesh_price_usd": null,
  "step_price_usd": null,
  "tolerance_mm": null
 },
 "related": [
  "list-ltd-mug",
  "ltd-bottom-plate",
  "ltd-top-plate",
  "glass-syringes"
 ],
 "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": [
  {
   "feature": "rod-guide bore",
   "exact": "Ø2 × 13",
   "mates": "Ø2 displacer rod (slides through it)",
   "fit": "run",
   "files": "all"
  },
  {
   "feature": "syringe socket",
   "exact": "Ø15.40 × 12",
   "mates": "5 mL glass syringe barrel",
   "fit": "socket",
   "files": "all"
  },
  {
   "feature": "Luer port",
   "exact": "Ø5",
   "mates": "Luer cone (no contact)",
   "fit": "designed",
   "files": "all"
  },
  {
   "feature": "screw holes",
   "exact": "Ø3.4 × 7",
   "mates": "M3 clearance",
   "fit": "designed",
   "files": "all"
  }
 ],
 "fit_classes": {
  "press": "stays put: pin, tube, bearing or magnet held by interference. Typical FDM: hole +0.0 to +0.1 mm on diameter.",
  "slide": "assembles by hand and is held by a grub, pinch or clamp: shaft in a hub, rod in a socket, spigot in a bore. Typical FDM: +0.2 mm.",
  "run": "turns or slides in use: pin in a link, rod through a guide. Typical FDM: +0.3 mm.",
  "socket": "large sliding fit: syringe barrel, sleeve, bobbin in a bore. Typical FDM: +0.3 mm.",
  "clamp": "split part that closes on the mating part with screws: make it at size.",
  "designed": "a gap that is part of the design (piston fit option, displacer gap, air gap): do not change."
 },
 "faq": [
  {
   "q": "Which syringe fits the mug LTD's socket?",
   "a": "The 5 mL all-glass syringe (barrel Ø15.40); the socket is drawn at that OD exactly."
  }
 ],
 "files_license": null,
 "offers": [
  {
   "file": "mug-ltd-top-plate-90-glass5",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/mug-ltd-top-plate/mug-ltd-top-plate-90-glass5.step",
   "stl": "https://xemstudio.com/files/hardware/mug-ltd-top-plate/mug-ltd-top-plate-90-glass5.stl",
   "note": "top (cold) plate Ø90 × 3: Ø2 rod-guide bore 13 long through the plate and a Ø20 × 10 boss; Ø15.40 socket for the 5 mL glass syringe barrel at x 35 (floor 9 above the plate's underside, 12 deep, Ø18.4 boss) over a Ø5 port; 7 × Ø3.4"
  }
 ],
 "markdown": "https://xemstudio.com/objects/mug-ltd-top-plate/index.md"
}