Heads up: many models on this page are AI-generated or uploaded untested. They may be misconfigured for the intended application — check the dimensions and tolerances, and verify or edit the model before printing or relying on it.*
Rolling-Dome Trunk Vertebra
A Ø50 x 3 mm spine disc for the 'SG90 Tendon-Driven Continuum Trunk Arm' kit, printed ×8. It has a Ø12 hub topped by a R7.5 rolling dome with its apex at 12 mm, which sets the 12 mm stacking pitch. The 4.6 mm bore rides loosely on the 4 mm OD PTFE backbone so each segment can tilt. Three chamfered 1.8 mm holes at R20 guide the 0.8–1.0 mm braided tendons, and three Ø10 lightening holes keep each disc to about 6 cm³.
Continuum Snake Spine Vertebra
A stackable 2-DOF vertebra for snake robots and tendon-driven continuum arms. Each 36 mm link has a 10 mm hollow centre channel for wiring and four 2.4 mm tendon holes on a 30 mm circle. You chain identical links by turning each one 90° to the last. Every pivot is an M3x8 screw that passes through a 3.4 mm clearance tab and threads into a 2.6 mm self-tap tab, and each joint tilts about ±35°. It prints without supports because a 45° funnel sits under the disc.