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Trunk Tower Column
Hollow riser for the 'SG90 Tendon-Driven Continuum Trunk Arm' kit. It is a 60 mm OD tube with a 2.4 mm wall and stands 70 mm tall. The Ø84 mm base flange bolts to the servo deck with 4x M3 on a 36 mm radius. The Ø76 mm top flange carries the root plate on 3x M3 at R34, with 5.7 mm hex nut pockets underneath. Three 28 mm pointed-arch windows let the Bowden tubes and wiring pass through. It prints upright with no supports.
🧩 Part of the SG90 Tendon-Driven Continuum Trunk Arm (hollow riser carrying the trunk root) kit.
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