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Quadruped Leg Shin With Spring Foot
A tibia link for small DIY quadruped robots (SpotMicro / Petoi class) with a compliant leaf-spring foot printed as one piece with the shin, so foot strike is absorbed instead of hammering the knee servo. The knee is a 16.05 mm through bore for two 625 bearings (5 x 16 x 5 mm) on a 5 mm shaft or M5 bolt; a 3.4 mm M3 clearance hole sits on a 20.2 mm lever arm for the servo pushrod, and the rounded toe is cross-drilled M3 for a rubber pad or spike. 111 mm from knee centre to toe, 10 mm thick, printed flat so every bending load runs in the XY plane and never across layer lines.
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