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Tray Ball-Stud Knuckle
An L-bracket (34 x 27 x 18 mm) that carries the Ø10 mm snap ball stud under the 150 mm tray. It is part of the 'SG90 3-DOF Ball-Balancing Platform' kit (print ×3). The 5 mm flange has two 3.4 x 7 mm slots, 24 mm apart, for M3x10 SHCS going into the tray's M3 heat-set bosses. The ball centre is 16 mm from the mating face, so the Snap-Socket Linkage Rod clips straight on.
🧩 Part of the SG90 3-DOF Ball-Balancing Platform (bolts under tray, carries top ball joint) kit.
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