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.*
Upper Leg Bearing Plate
The outer half of the upper leg in the 'MG996R 12-DOF Quadruped Robot Dog' kit. It is a 169 x 60 x 5 mm plate that screws onto the four 44 mm posts of the Upper Leg Servo Plate with M3 screws, which sit in 6.5 mm counterbores and thread into heat-set inserts. At the shoulder, a 30 mm boss holds a press-fit 625 bearing (16.05 x 5.2 mm pocket, 6 mm through-hole) for the M5x20 pivot bolt. At the knee, a 5.5 x 16 mm M5 slot is the idler side of the 44 mm knee clevis, and you slide it to line the pivot up with the servo shaft.
Upper Leg Servo Plate
The inner half of the upper leg in the 'MG996R 12-DOF Quadruped Robot Dog' kit. It is a 169 x 60 x 5 mm plate. At the shoulder it takes a 25T round servo horn: a 9 mm centre hole and four 3.4 mm radial slots at r 7–15 mm for M3x10 screws. At the knee it holds a second MG996R in a 41.3 x 20.6 mm pocket, with tab slots that fit 46–55 mm hole spacing for M3x16 screws. Four 10 mm x 44 mm posts with 4 mm bores for M3 heat-set inserts join it to the outer bearing plate.
Twin Hip Servo Frame
The front and rear end plate for the 'MG996R 12-DOF Quadruped Robot Dog' kit. You print the same part twice. Each 170 x 66 x 6 mm plate holds two MG996R hip servos in 41.3 x 20.6 mm pockets. Four slots per pocket take M3x16 screws with nuts and fit tab hole spacings from 46 to 55 mm. A 30 mm rear ledge takes two 2020 rails at 60 mm centres on M5x10 screws and T-nuts. The plate also has a 30 x 16 mm wire pass-through and lightening windows.
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.