{
 "version": "2026-10-20",
 "license": "Dimension sheets: CC BY 4.0. Standard and published-size files: CC BY 4.0. Xem Studio's own designs (files_license = Xem Studio Design License): free to use and sell things from, not to redistribute as files — https://xemstudio.com/license/. Other publishers' files: their own license, linked beside them.",
 "slug": "print-in-place-captive-turntable",
 "name": "Print-in-place: captive turntable with V-ridge retention (Ø80 platter)",
 "kind": "hardware",
 "category": "3D printing",
 "group": "Print-in-place mechanisms",
 "year": null,
 "question": "How do you 3D print a turntable (lazy Susan bearing) in one piece?",
 "tags": [
  "3d printable",
  "print in place",
  "no assembly",
  "no supports",
  "mechanism",
  "stl",
  "step",
  "turntable",
  "bearing"
 ],
 "aliases": [
  "print in place turntable",
  "print in place lazy susan",
  "3d printed turntable bearing",
  "captive turntable stl",
  "print in place rotating base"
 ],
 "overall_mm": {
  "length": 100,
  "width": 100,
  "height": 10
 },
 "official_cad": false,
 "xem_status": "free-files",
 "les": false,
 "free_files": 3,
 "url": "https://xemstudio.com/objects/print-in-place-captive-turntable/",
 "sheet_txt": "https://xemstudio.com/objects/print-in-place-captive-turntable/sheet.txt",
 "sheet": {
  "basis": "Xem Studio design: revolved profiles; 45° V-groove / V-ridge retention; one designed running gap of 0.40 mm",
  "overall_mm": {
   "length": 100,
   "width": 100,
   "height": 10
  },
  "notes": [
   "3D print in place — prints already assembled, moving, in one job. Drawn at true size with no printer tolerance added; the 0.40 mm running gaps are part of the design.",
   "Running gap 0.40 mm per side, 0.80 mm on diameter — part of the design, drawn as is. On the 45° faces the same 0.40 mm is measured square to the face (0.57 mm along the axis).",
   "Bed: both bodies lie flat — the platter inside the base ring, both on their full bottom faces.",
   "Support while printing: the platter rim carries a 3 mm deep 45° V-groove; the base ring's V-ridge grows into it from the base wall, its underside at 45°. No face in either body overhangs more than 45°.",
   "Captured by the V: the ridge sits in the groove, so the platter can move neither up nor down out of the ring (axial retention both ways) and stays centred radially.",
   "Freeing it: hold the base and turn the platter one full turn each way; press it up and down once.",
   "Motion: continuous rotation; end play 0.57 mm each way, radial play 0.40 mm. No stops."
  ],
  "table": {
   "columns": [
    "key",
    "value",
    "what"
   ],
   "rows": [
    [
     "gap_mm",
     0.4,
     "running gap per side on every moving interface (radial, axial, under captured parts) — part of the design, not a tolerance"
    ],
    [
     "platter_d_mm",
     80,
     "turntable (platter) diameter"
    ],
    [
     "platter_h_mm",
     10,
     "platter thickness"
    ],
    [
     "base_d_mm",
     100,
     "base ring outside diameter"
    ],
    [
     "base_bore_d_mm",
     80.8,
     "base ring bore"
    ],
    [
     "groove_depth_mm",
     3,
     "45° V-groove in the platter rim"
    ],
    [
     "ridge_mm",
     2.43,
     "V-ridge of the base reaching into the groove"
    ],
    [
     "axial_play_mm",
     0.57,
     "end play each way (0.40 square to the 45° flanks)"
    ],
    [
     "radial_play_mm",
     0.4,
     "radial play"
    ],
    [
     "rotation_deg",
     "360 continuous",
     "platter in the base"
    ],
    [
     "center_hole_d_mm",
     10,
     "platter centre hole"
    ],
    [
     "mount_holes",
     "4 × Ø4.5 on Ø91",
     "base ring"
    ],
    [
     "platter_holes",
     "4 × Ø3.4 on Ø50",
     "platter"
    ]
   ]
  }
 },
 "sheet_text": "Print-in-place: captive turntable with V-ridge retention (Ø80 platter) — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/print-in-place-captive-turntable/  (sheet CC BY 4.0; files Xem Studio Design License, https://xemstudio.com/license/)\nBasis: Xem Studio design: revolved profiles; 45° V-groove / V-ridge retention; one designed running gap of 0.40 mm\nCatalog version: 2026-10-20\n\nOverall (mm): length 100.0, width 100.0, height 10.0\n- 3D print in place — prints already assembled, moving, in one job. Drawn at true size with no printer tolerance added; the 0.40 mm running gaps are part of the design.\n- Running gap 0.40 mm per side, 0.80 mm on diameter — part of the design, drawn as is. On the 45° faces the same 0.40 mm is measured square to the face (0.57 mm along the axis).\n- Bed: both bodies lie flat — the platter inside the base ring, both on their full bottom faces.\n- Support while printing: the platter rim carries a 3 mm deep 45° V-groove; the base ring's V-ridge grows into it from the base wall, its underside at 45°. No face in either body overhangs more than 45°.\n- Captured by the V: the ridge sits in the groove, so the platter can move neither up nor down out of the ring (axial retention both ways) and stays centred radially.\n- Freeing it: hold the base and turn the platter one full turn each way; press it up and down once.\n- Motion: continuous rotation; end play 0.57 mm each way, radial play 0.40 mm. No stops.\n\nkey  value  what\ngap_mm  0.4  running gap per side on every moving interface (radial, axial, under captured parts) — part of the design, not a tolerance\nplatter_d_mm  80.0  turntable (platter) diameter\nplatter_h_mm  10.0  platter thickness\nbase_d_mm  100.0  base ring outside diameter\nbase_bore_d_mm  80.8  base ring bore\ngroove_depth_mm  3.0  45° V-groove in the platter rim\nridge_mm  2.43  V-ridge of the base reaching into the groove\naxial_play_mm  0.57  end play each way (0.40 square to the 45° flanks)\nradial_play_mm  0.4  radial play\nrotation_deg  360 continuous  platter in the base\ncenter_hole_d_mm  10  platter centre hole\nmount_holes  4 × Ø4.5 on Ø91  base ring\nplatter_holes  4 × Ø3.4 on Ø50  platter\n\nFiles elsewhere (not hosted by Xem Studio; license as stated by the publisher):\n- Xem Studio: Print-in-place mechanism design (geometry computed in the generator) — web — Xem Studio design — https://xemstudio.com/\n\nFree files (Xem Studio Design License, Xem Studio; STEP + STL, 3 parts): https://xemstudio.com/files/hardware/print-in-place-captive-turntable/index.json\nAPI: https://xemstudio.com/api/geometry?object=print-in-place-captive-turntable\n",
 "sources": [
  {
   "publisher": "Xem Studio",
   "title": "Print-in-place mechanism design (geometry computed in the generator)",
   "url": "https://xemstudio.com/",
   "formats": [
    "web"
   ],
   "license": "Xem Studio design",
   "license_verified": true,
   "hosted": false
  }
 ],
 "xem": {
  "status": "free-files",
  "sheet_free": true,
  "mesh_price_usd": null,
  "step_price_usd": null,
  "tolerance_mm": null
 },
 "related": [
  "print-in-place-captive-wheel-axle",
  "print-in-place-barrel-hinge-180",
  "print-in-place-multi-knuckle-hinge",
  "print-in-place-dovetail-slider",
  "print-in-place-articulated-chain",
  "print-in-place-ball-joint",
  "print-in-place-push-button-flexure"
 ],
 "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": "What keeps the platter in the ring?",
   "a": "A 45° V-ridge on the base ring inside a 3 mm V-groove in the platter rim, 0.40 mm clear on every flank: it holds the platter both up and down."
  },
  {
   "q": "Why a V-groove and not a flat lip?",
   "a": "A flat lip would print as a flat overhang over air; both 45° flanks print without supports."
  }
 ],
 "files_license": {
  "name": "Xem Studio Design License",
  "holder": "Xem Studio",
  "url": "https://xemstudio.com/license/",
  "note": "Xem Studio's own design: free to use, print, modify and sell things made from it; not to be republished or redistributed as files."
 },
 "offers": [
  {
   "file": "print-in-place-captive-turntable-assembly",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "Xem Studio Design License",
   "step": "https://xemstudio.com/files/hardware/print-in-place-captive-turntable/print-in-place-captive-turntable-assembly.step",
   "stl": "https://xemstudio.com/files/hardware/print-in-place-captive-turntable/print-in-place-captive-turntable-assembly.stl",
   "note": "The whole print as laid on the bed (2 bodies, already assembled); STEP keeps each moving body a separate solid"
  },
  {
   "file": "print-in-place-captive-turntable-platter",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "Xem Studio Design License",
   "step": "https://xemstudio.com/files/hardware/print-in-place-captive-turntable/print-in-place-captive-turntable-platter.step",
   "stl": "https://xemstudio.com/files/hardware/print-in-place-captive-turntable/print-in-place-captive-turntable-platter.stl",
   "note": "Platter Ø80 × 10 with a 45° V-groove round its rim, Ø10 centre hole, 4 × Ø3.4"
  },
  {
   "file": "print-in-place-captive-turntable-base",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "Xem Studio Design License",
   "step": "https://xemstudio.com/files/hardware/print-in-place-captive-turntable/print-in-place-captive-turntable-base.step",
   "stl": "https://xemstudio.com/files/hardware/print-in-place-captive-turntable/print-in-place-captive-turntable-base.stl",
   "note": "Base ring Ø100 × 10 with the 45° V-ridge, 4 × Ø4.5 mounting holes"
  }
 ],
 "markdown": "https://xemstudio.com/objects/print-in-place-captive-turntable/index.md"
}