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.*
Bolt-On Bat Wing Frame
This open bat-wing skeleton is part of the 'SG90 Scotch-Yoke Flapping Wing Rig' kit, and you print two. It measures about 150 x 87 mm and is 3 mm thick. The 30 x 14 x 4 mm root pad bolts to the Shoulder Wing Root Rocker with two M3x8 screws into the rocker's heat-set inserts, through 3.4 mm holes 15 mm apart. From the pad, a 6 mm leading-edge spar, three tapered finger spars and a scalloped trailing rib make a frame of about 9 cm³ that you can cover with fabric or foil.
Tilt Axis Idler Pivot Post
This is the idler pivot post for the 'SG90 Animatronic Eye Mechanism' kit. The tilt paddle's left arm turns on an M3x16 SHCS, M3 washer and M3 nylock through the post's Ø3.4 hole at y -45, z 30, directly across from the SG90 tilt servo. The wall is 6 mm thick with a flat inner face and a rounded top, and two gussets brace it. The 4 mm foot (about 20 × 34 × 40 mm overall) has a 3.4 mm slot with end centres 20 mm apart. Two M3x10 SHCS and nuts go through deck holes (-60, -40) and (-60, -50), and the slot lets you slide the post ±5 mm to line it up with the servo shaft. Fit the foot screws without washers so the heads clear the gussets.
Twin-Slot Eye Tilt Paddle
The U-shaped tilt rocker (96 × 37 × 18 mm, black) for the 'SG90 Animatronic Eye Mechanism' kit. It pivots on the y -45 / z 30 axis between an SG90 horn and an M3x16 idler pivot. Its 3 mm crossbar has two 22 × 4.2 mm rounded slots on a 60 mm pitch that steer the M3x35 eye-stalk screws. The right arm has a flat outer face for the stock SG90 horn (2 servo self-tappers) and a Ø7 hole for screwdriver access. The left arm has a Ø3.4 hole for an M3x16 SHCS, washer and nylock.
Pan Scotch-Yoke Tie Bar
This is the red tie bar for the 'SG90 Animatronic Eye Mechanism' kit. It is 74 × 30 × 5 mm and connects both eye-yoke pan levers through Ø3.4 holes on a 60 mm pitch, using M3x8 SHCS and M3 washers. Its centre tongue has a 2.6 mm slot (end centres 14 mm apart) with 0.4 mm chamfers on both faces. The M2x16 pin on the SG90 pan horn runs in this slot, forming a scotch yoke that pans both eyes together.
Animatronic Eyeball
A Ø30 mm eyeball for the 'SG90 Animatronic Eye Mechanism' kit (print ×2). It prints standing on its flat Ø25.4 mm rear face. The side flats sit 29 mm apart and each has a Ø2.6 × 8 mm self-tap bore for the M3x12 SHCS tilt pins through the gimbal yoke. A Ø2.6 × 12 mm rear bore takes the M3x35 stalk screw that the tilt paddle steers. On the front is a dished Ø12 mm iris and a Ø5 mm pupil recess, ready for paint or a sticker.
Eye Gimbal Pan Yoke
A U-shaped gimbal yoke for the 'SG90 Animatronic Eye Mechanism' kit (print ×2). Each yoke holds one 30 mm eyeball so its pan and tilt axes cross at the centre of the eye. The 41 × 10 × 5 mm bottom bar pivots on the deck using an M3x16 SHCS, a washer and an M3 nylock through a Ø3.4 bore. The two 5 mm uprights have Ø3.4 tilt holes at z 29.5, 31 mm apart on their inner faces, and take M3x12 SHCS that screw into the eyeball. A +Y lever with an R7 pad has a Ø2.6 self-tap hole 20 mm from the pivot for the M3x8 tie-bar screw.
Animatronic Eye Deck Plate
This is the 140 x 150 x 3 mm base deck for the 'SG90 Animatronic Eye Mechanism' kit. It has a 10 mm grid of Ø3.4 M3 clearance holes, with the eye-yoke pan pivots at (±30, 0). There is a 12.6 x 23.0 mm through-pocket for the SG90 pan servo, plus slotted tab holes for its M2x8 screws and nuts. Underneath, 25 mm corner legs and 3 x 6 mm ribs keep the servo body and the M3 screw heads and nuts off the table. The part prints top-face-down with no supports.