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.*
Roller-Track Pan Platter
The rotating pan table for the 'MG996R Heavy Pan-Tilt Camera Gimbal' kit. It is a 6 mm plate made from a 100 mm disc and a 60 x 130 mm bar, and it bolts to the MG996R pan servo horn through a 12 mm centre hole and eight 3.4 mm radial slots. Its flat underside annulus from r = 36 to 48 mm is the track that rides on the three 624 roller forks. Four 4.0 mm bores take M3 heat-set inserts for the tilt uprights. The two +Y bores sit over the roller track, so they are blind: 4.8 mm deep with a 1.2 mm skin underneath, sized for short 4 mm M3 inserts.
Slotted Servo Crank Arm
A 37 mm long, 4 mm thick flat crank for the 'MG90S Six-Servo Stewart Platform' kit (print ×6). It fits over a stock MG90S single-arm horn: the horn keys into a 6 mm wide, 1 mm deep recess on the underside and is fixed with two M2 self-tappers through a 2.4 mm radial slot. The slot runs from 6 to 16 mm radius, so the horn's hole spacing doesn't need to be known. A 7.5 mm centre hole clears the horn screw, and a 10 mm tip boss has an M3 clearance hole 24.0 mm from the shaft that takes the pushrod ball-stud tab with an M3x16 screw and a nylock nut.
SG90 Tendon Capstan Drum
This capstan drum is part of the 'SG90 Tendon-Driven Continuum Trunk Arm' kit (print ×3). It keys onto the SG90's stock single-arm horn through a 7.5 x 2.5 mm underside slot and is held by an M2x10 screw that goes through a 2.4 mm hole with a Ø4.5 counterbore. A 0.8–1.0 mm braided tendon ties through a 1.8 mm cross hole in the Ø20 groove, which pulls in 31 mm of line per 180°. The drum is 12 mm tall with Ø28 flanges, and 45° chamfers on the flanges keep the line in the groove.
Biped Rolling Foot Plate
Black 90 x 58 x 3 mm foot sole with a 36 mm wide, 6 mm thick horn upright, part of the 'SG90 Parallelogram-Leg Biped Walker' kit. An SG90 horn fits flat against the rear face, with its hub in a 5.5 mm vertical slot. Two M2x10 self-tapping screws go through 2.4 mm slots (r = 5–16 mm), which come in three rows at 30, 34 and 38 mm above the sole for height adjustment. The ankle block has space to roll ±20° behind the upright. Print two, one mirrored in Y.
Hip Horn Drive Link
Red 87 x 40 x 6 mm drive link for the 'SG90 Parallelogram-Leg Biped Walker' kit. A 40 mm horn pad holds an SG90 horn with two M2x10 self-tapping screws through 2.4 mm radial slots (r = 5–16 mm) around a 5.5 mm centre hole. 60.0 mm away, a 14 mm boss has a 3.4 mm hole for the M3x20 pivot screw and nyloc nut into the ankle lug. Print two and flip one for the other leg.
Horn-Side Drive Arm
A 5 mm thick, 98 mm long drive arm that bolts onto a hobby servo horn. A 2.4 mm radial slot running 6–22 mm from the pivot takes M2 horn screws at any horn hole spacing, and a 7 mm access hole sits over the spline screw. The far end has a pad with two M3 self-tap pilots (2.6 mm, 15 mm deep, 12 mm apart) that screw into the pad edge, so you can attach a linkage, gripper finger or flag.
SG90 Tibia Foot Link
The lower leg and foot for the 'SG90 18-DOF Hexapod Walker' kit (print 6). It is a tapered link 90 x 20 x 6 mm. It fits an SG90/MG90S single-arm horn in a 1.5 mm recess (a 9 mm circle plus a 6.5 mm slot to 19 mm), and a 6 mm hole gives access to the horn screw. You fix the horn with M2x6 self-tappers drilled through its own holes. The foot tip sits 80 mm from the pivot, has a 5 mm radius and 1 mm chamfers so it rolls cleanly, and a 5 x 36 mm slot takes out weight.
SG90 Ball-Stud Crank Arm
A 36 x 16 x 5 mm servo crank with a built-in Ø10 mm snap ball stud 20 mm from the shaft, printed ×3 for the 'SG90 3-DOF Ball-Balancing Platform' kit. It sits on top of the stock SG90 single-arm horn. The horn screw goes through the Ø7 mm hub bore, and two M2 screws go through the 2.4 mm slot (5–15 mm from the shaft) into the horn's own holes. The Snap-Socket Linkage Rod then clips onto the ball.
Forearm Wrist Link
This is the elbow-to-wrist link of the 'SG90 Four-Axis Desktop Robot Arm' kit. It is a flat bar 5 mm thick and 18 mm wide, 83 mm long from the elbow axis to its rounded tip. The Ø26 × 6 mm elbow hub screws to an SG90 double-arm horn. The horn sits in a 7.5 × 36 × 1.8 mm pocket that has a short rear lobe so the slot is fully walled, with a Ø5.3 hole for the horn screw. The flat wrist end carries the gripper palm on two M3 bolts through Ø3.4 holes 15 mm apart, at 60 and 75 mm from the elbow axis. Their M3 nuts sit in 5.7 mm captured hex pockets on the underside.
Servo Horn To 8 mm Shaft Hub
A pinch-clamp hub that adapts any screw-on servo horn, disc or small wheel to a plain 8 mm shaft — the 44 mm flange carries four radial M3 slots spanning an 18–34 mm bolt circle, so it fits round and 4-arm horns without guessing their hole pattern. The 22 mm boss has an 8.3 mm slip-fit bore with 27 mm of shaft engagement, split by a 2.2 mm pinch gap closed by a single M3 screw and captured nut; 45° gussets tie the boss to the flange and the clamp ears ramp at 45° so the whole thing prints flat on the flange with no supports. Overall 44 mm diameter x 34 mm tall.