Drag to rotate · scroll to zoom. Files are for personal use — no resale or redistribution.
Trunk Root Plate
This is the root plate of the 'SG90 Tendon-Driven Continuum Trunk Arm' kit: a Ø76 x 8 mm disc that bolts to the tower's top flange with 3x M3 at R34. It clamps the 4 mm OD PTFE backbone in a 4.3 mm bore, locked by an M3x8 set screw threaded into a radial 2.6 mm hole on +X at mid-height. It also has three 4.3 mm x 6 mm Bowden tube sockets at R20 that open downward and step into 1.8 mm tendon holes. The first rolling dome, a Ø12 hub with an R7.5 cap, peaks 9 mm above the plate top.
🧩 Part of the SG90 Tendon-Driven Continuum Trunk Arm (backbone clamp, Bowden sockets, first dome) kit.
Ordering a print of any gallery model is free once you're signed in. Want the OBJ for your own printer? Download it for $1 — no account needed, we email you the link. Signed-in members can pay with credits instead.