{
 "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": "syringe-v-block-90",
 "name": "90° V block for two 10 mL syringes",
 "kind": "hardware",
 "category": "Stirling engines",
 "group": "Drives & mechanisms",
 "year": null,
 "question": "How do I hold two syringes at 90° for an alpha Stirling layout?",
 "tags": [
  "alpha",
  "v-twin",
  "syringe",
  "layout",
  "stirling",
  "long earth society"
 ],
 "aliases": [
  "syringe v block",
  "90 degree syringe holder",
  "v twin syringe block"
 ],
 "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/syringe-v-block-90/",
 "sheet_txt": "https://xemstudio.com/objects/syringe-v-block-90/sheet.txt",
 "sheet": {
  "basis": "Two sockets at the 10 mL barrel OD Ø15.9, axes at ±45°",
  "overall_mm": {
   "length": null,
   "width": null,
   "height": null
  },
  "notes": [
   "A 70 × 24 × 40 block with two Ø15.9 sockets (fit: socket) for 10 mL syringe barrels, their axes at ±45° (90° between them).",
   "The axes meet 4 mm below the block's base, too close for a crank under it: it is a layout piece for showing the V. The running V-twin is the alpha V-twin frame."
  ],
  "table": {
   "columns": [
    "parameter",
    "value"
   ],
   "rows": [
    [
     "block",
     "70 × 24 × 40"
    ],
    [
     "sockets",
     "2 × Ø15.9"
    ],
    [
     "angle between axes",
     "90°"
    ],
    [
     "axes meet",
     "4 below the base"
    ]
   ]
  }
 },
 "sheet_text": "90° V block for two 10 mL syringes — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/syringe-v-block-90/  (CC BY 4.0)\nBasis: Two sockets at the 10 mL barrel OD Ø15.9, axes at ±45°\nCatalog version: 2026-10-20\n\nSizes: see table below\n- A 70 × 24 × 40 block with two Ø15.9 sockets (fit: socket) for 10 mL syringe barrels, their axes at ±45° (90° between them).\n- The axes meet 4 mm below the block's base, too close for a crank under it: it is a layout piece for showing the V. The running V-twin is the alpha V-twin frame.\n\nparameter  value\nblock  70 × 24 × 40\nsockets  2 × Ø15.9\nangle between axes  90°\naxes meet  4 below the base\n\nFiles elsewhere (not hosted by Xem Studio; license as stated by the publisher):\n- Wikipedia: Stirling engine — web — CC BY-SA 4.0 (text) — https://en.wikipedia.org/wiki/Stirling_engine\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/syringe-v-block-90/index.json\nAPI: https://xemstudio.com/api/geometry?object=syringe-v-block-90\n",
 "sources": [
  {
   "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": "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": [
  "alpha-v-twin-syringe-frame",
  "plastic-syringes",
  "two-pin-crank-disc-90"
 ],
 "fits": [
  {
   "role": "Goes in or on",
   "items": [
    {
     "slug": "plastic-syringes",
     "why": "10 mL barrels in the Ø15.9 sockets"
    }
   ]
  },
  {
   "role": "Alternatives",
   "items": [
    {
     "slug": "alpha-v-twin-syringe-frame",
     "why": "the running V-twin frame"
    }
   ]
  }
 ],
 "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": "V-block sockets",
   "exact": "Ø15.9",
   "mates": "10 mL syringe barrel",
   "fit": "socket",
   "files": "v-block-"
  }
 ],
 "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": "Can the V block run as an engine?",
   "a": "No: its axes meet 4 mm below the base, with no room for a crank. Use the alpha V-twin frame."
  },
  {
   "q": "What fits the V block sockets?",
   "a": "10 mL syringe barrels, Ø15.9 outside."
  }
 ],
 "files_license": null,
 "offers": [
  {
   "file": "v-block-90-2x-syringe-10ml",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/alpha-twin-crank-90/v-block-90-2x-syringe-10ml.step",
   "stl": "https://xemstudio.com/files/hardware/alpha-twin-crank-90/v-block-90-2x-syringe-10ml.stl",
   "note": "for a running V-twin use the alpha V-twin frame)"
  }
 ],
 "markdown": "https://xemstudio.com/objects/syringe-v-block-90/index.md"
}