Print-in-place: two-axis gimbal (nested rings, Ø76) — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/print-in-place-two-axis-gimbal/  (sheet CC BY 4.0; files Xem Studio Design License, https://xemstudio.com/license/)
Basis: Xem Studio design: concentric sphere bands, 45° cone pivots; one designed running gap of 0.40 mm
Catalog version: 2026-10-20

Overall (mm): length 76.0, width 76.0, height 8.0
- 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: all three rings lie flat and concentric on the bed; the two pivot axes (X and Y) are horizontal at mid-height, 4 mm up.
- Support while printing: the facing edges are concentric sphere bands (the inner one only 13° off vertical at the bed), and each pivot is a 45° cone on a horizontal axis in a 45° cone socket; nothing overhangs more than 45°.
- Captured: each ring hangs on two opposed cones, so it cannot drop out; the sphere bands keep the 0.40 mm gap at every angle.
- Freeing it: hold the frame and turn the middle ring through a full turn, then the inner disc; the first turn breaks the bed contact.
- Motion: the middle ring turns 360° about X and the disc 360° about Y — checked in the model every 30° × 45° with no contact; together they point the disc in any direction (two-axis gimbal).

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
outer_d_mm  76.0  frame ring outside diameter
h_mm  8.0  all three rings, as printed
ring_1_sphere_d_mm  54.0  middle ring outer sphere band
disc_sphere_d_mm  36.0  inner disc sphere band
pin_d_mm  5.2  45° cone pivots, two per axis
center_hole_d_mm  10  inner disc
rotation_x_deg  360 continuous  middle ring in the frame
rotation_y_deg  360 continuous  inner disc in the middle ring
mount_holes  4 × Ø3.4 on Ø67  frame

Files elsewhere (not hosted by Xem Studio; license as stated by the publisher):
- Xem Studio: Print-in-place mechanism design (geometry computed in the generator) — web — Xem Studio design — https://xemstudio.com/

Free files (Xem Studio Design License, Xem Studio; STEP + STL, 4 parts): https://xemstudio.com/files/hardware/print-in-place-two-axis-gimbal/index.json
API: https://xemstudio.com/api/geometry?object=print-in-place-two-axis-gimbal