Parts / Collet coupler (secondary concept)

OpenSCAD render of Collet coupler (secondary concept)

Drag to orbit · pinch / scroll to zoom · two fingers / right-drag to pan. Shown as exported for printing, on a 10 mm grid.

Collet coupler (secondary concept) secondary

Split clamp on the thin rod with an M2 screw; needs a separately mounted motor. Rod diameter is estimated from photo, not caliper.

Download STL (83 KB, binary)

File: hardware/stl/coupler_collet.stl
Bounding box: 18.00 × 16.00 × 20.00 mm (X × Y × Z, as exported; Z up from the bed)
Volume: 3.81 cm³; ≈ 4.8 g if printed solid in PETG (real mass depends on walls and infill)
Mesh: 1,698 triangles
Material: PETG
Layer: 0.16 mm
Walls / infill: 4 walls, 40 %
Orientation: D-bore end down.
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.