Parts / Offset gear drive: ring gear
Drag to orbit · pinch / scroll to zoom · two fingers / right-drag to pan. Shown as exported for printing, on a 10 mm grid.
Offset gear drive: ring gear fallback
Fallback for tight hinge cases: a side-mounted motor drives the knob through a 20/30 spur pair; the ring is also a spline cup on the knob.
- File
hardware/stl/offset_gear_ring.stl- Bounding box
- 25.60 × 25.51 × 16.00 mm (X × Y × Z, as exported; Z up from the bed)
- Volume
- 4.37 cm³; ≈ 5.5 g if printed solid in PETG (real mass depends on walls and infill)
- Mesh
- 3,708 triangles
- Material
- PETG
- Layer
- 0.12 mm (m 0.8 teeth)
- Walls / infill
- 4 walls, 40 %
- Orientation
- Gear face down as exported.
- Supports / brim
- None.
- Quantity
- -
- Versions
- ABCD
Print settings are starting points from ASSEMBLY.md and the print plan, not values tested on this design. Dimensions that depend on the knob, rod or clip are estimated from photo, not caliper.