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Print-in-place: captive turntable with V-ridge retention (Ø80 platter)
How do you 3D print a turntable (lazy Susan bearing) in one piece? · Hardware · basis: Xem Studio design: revolved profiles; 45° V-groove / V-ridge retention; one designed running gap of 0.40 mm
Also called: print in place turntable, print in place lazy susan, 3d printed turntable bearing, captive turntable stl, print in place rotating base
Exact dimensions. True size, with no printing tolerance added.
- length
- 100.0 mm
- width
- 100.0 mm
- height
- 10.0 mm
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.
Print-in-place: captive turntable with V-ridge retention size chart
| key | value | what |
|---|---|---|
| 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 | 80.0 | turntable (platter) diameter |
| platter_h_mm | 10.0 | platter thickness |
| base_d_mm | 100.0 | base ring outside diameter |
| base_bore_d_mm | 80.8 | base ring bore |
| groove_depth_mm | 3.0 | 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 |
Where the files are
Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.
| Xem Studio | Print-in-place mechanism design (geometry computed in the generator) | web | Xem Studio design |
Free files
★ Free files 3 parts. Xem Studio design: free to use, print and sell things from; not to be republished as files. Xem Studio Design License. index.json
| print-in-place-captive-turntable-assembly | The whole print as laid on the bed (2 bodies, already assembled); STEP keeps each moving body a separate solid | STEP · STL |
| print-in-place-captive-turntable-platter | Platter Ø80 × 10 with a 45° V-groove round its rim, Ø10 centre hole, 4 × Ø3.4 | STEP · STL |
| print-in-place-captive-turntable-base | Base ring Ø100 × 10 with the 45° V-ridge, 4 × Ø4.5 mounting holes | STEP · STL |
https://xemstudio.com/mcp to Claude, ChatGPT, Cursor or any MCP client (free, no account, one minute) and it can look up exact sizes, mating fits and free STEP/STL from every chat.Plain text: sheet.txt · JSON: /api/geometry?object=print-in-place-captive-turntable
Fits with
Questions
What keeps the platter in the ring?
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.
Why a V-groove and not a flat lip?
A flat lip would print as a flat overhang over air; both 45° flanks print without supports.