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.*
Spine Deck Pi 4 Plate
A 170 x 100 x 4 mm ribbed electronics deck for a rover chassis. It has raised bosses on the 58 x 49 mm Raspberry Pi 4 pattern with M2.5 nut pockets underneath, four 5.5 mm M5 holes for bolting to rails, slots for a PCA9685 servo board, battery-strap slots and wire pass-throughs.
Motor-Clearance Deck Leg
A tapered, hollow 60 mm leg/standoff that lifts a robot deck or chassis plate high enough to clear gearmotors and wiring underneath. It has a 32 mm square foot and a 20 mm square top pad with a 4.0 mm bore for an M3 brass heat-set insert, and the walls are 2 mm thick to keep material use low.
Ackermann Rover Chassis Deck
A 170 x 64 x 4 mm deck with 8 mm stiffening rails. It is the spine of the 'SG90 Ackermann Steering Rover Chassis' kit, with a 120 mm wheelbase. It has two 24 x 44 mm M3 (3.4 mm) patterns, one for the steering beam and one for the N20 twin-motor carrier, fastened with M3x16 and M3x30 screws and nuts. It also has a 26 x 15 mm cut-out for the SG90 servo body, four Ø6 x 5 mm standoffs for a Raspberry Pi Zero (58 x 23 mm, M2.5) and zip-tie slots for a 2x18650 holder.
18650 Battery Tail Cradle
A 78 x 46 x 33 mm bolt-on tray that holds two 18650 cells (18.4 x 65 mm) side by side on the back of a rover chassis. Three saddle ribs with 19.4 mm half-round channels locate the cells. Velcro strap slots and zip-tie slots hold them down, and the front wall has four M3 heat-set bores (4.0 mm) for mounting.
Flagged: battery or DC power. Not for safety-critical use without independent engineering review.
Idler Pin Pivot Post
A gusseted upright post that bolts to a robot chassis plate with two M3 screws on 26 mm centres and holds a 4 mm steel pin in a press-fit cross bore 22 mm up. You can use it as the pivot for a belt idler arm, a tensioner lever or a small swing arm. The flange is 36 x 8.5 x 4 mm, the upright is 16 mm wide and 28 mm tall, and two 45° gussets carry the load in the print plane.
Inchworm Servo Pedestal Chassis
This is the rear body of the 'SG90 Sawtooth-Foot Inchworm Crawler' kit. It is a 136 x 60 x 4 mm deck with a grid of 3.4 mm holes on a 10 mm pitch, where the rear sawtooth foot mounts with M3 screws. It also has two 3 x 22 mm battery-strap slots and a hollow, ribbed pedestal 16 mm tall that holds an SG90 servo lying on its side. The servo sits between cradle walls 23.6 mm apart and is clamped through two M3 brass heat-set inserts in 4.0 mm bores. Two 3.4 mm deck holes take the idler pivot post with M3x12 screws and nuts.
Hexapod Chassis Base Plate
The main body of the 'SG90 18-DOF Hexapod Walker' kit: a 164 x 124 x 4 mm plate with 30 mm corner chamfers and six SG90/MG90S hip-servo pockets (23.4 x 12.8 mm). Each pocket has slotted M2 tab slots that take tab hole spacings from 26 to 31.6 mm, so one plate fits most micro servos. It also has four 3.4 mm M3 standoff holes at (±20, ±30) for M3x30 standoffs to the deck, a 24 x 40 mm central wiring pass-through, and front and rear cable slots. It uses about 61 cm³ of material.
Walker Center Deck Tray
A 150 x 120 mm electronics deck that hangs between a walker robot's side frames. It has four 37 mm drop tabs with M3 clearance holes (3.4 mm), a 20 mm M3 standoff grid, 22 mm battery-strap slots and two 20 x 12 mm rounded wire pass-throughs, so you can mount controllers, a battery and wiring on one flat tray.
Walker Side Frame Plate
Side plate for the 'NEMA17 Twin-Motor Strandbeest Walker' kit (print ×2). It measures 176 x 80 x 6 mm and carries a NEMA17 on its inner face: 31 mm square M3 pattern, counterbored 6.5 mm on the outer face, a 22.4 mm pilot recess and a 16 mm crank-boss hole. It also has the two fixed Jansen leg pivots at ±76 mm, which are 4.5 mm M4 bores with 16 mm thrust bosses, plus eight 4.0 x 5 mm M3 heat-set bores that bolt the centre deck on with M3x10 screws. Lightening slots bring it to about 67 cm³.
N20 Rover Chassis Plate
A 150 x 96 x 4 mm chassis plate that sets the layout for every other part in the 'N20 4WD Skid-Steer Rover Base' kit. It has 3.4 mm M3 through-holes for four N20 gearmotor clamps, the Raspberry Pi 4 deck legs, a 2S 18650 battery cradle and the front sensor bumper, plus motor wire slots, two 30 x 8 mm wire pass-throughs and a 2 mm stiffening rim on the sides and rear.
2020 Octagon 135° Joining Plate
A 6 mm flat joining plate that holds two 2020 extrusions at 135° to each other, the corner angle of an octagon frame or an angled chassis base. Each 20 mm wide arm has a 5.6 mm alignment key that drops into the 6 mm T-slot and two 5.5 mm clearance holes at 20 and 45 mm for M5 T-nuts, so mitered beam ends line up square to the plate without any fiddling.
Mini-Sumo Bolt-On Sacrificial Wedge Blade
A replaceable front wedge blade, 96 mm wide, for 10 x 10 cm mini-sumo robots. It has a 1.2 mm scraping tip, a 25° ramp and a 24 mm tall back plate that bolts to the chassis front with two M3 screws, 50 mm apart, through height-adjust slots with 4 mm of travel. When the tip wears or chips after a match, you swap this part instead of reprinting the whole chassis, and the slots let you set the tip back to ground contact.
Flagged: a sharp edge or blade. Not for safety-critical use without independent engineering review.
2020 Five-Way Lattice Hub
A five-way socket hub for 2020 aluminium extrusion. Four horizontal rails and one vertical rail meet at a single node, so you can build 3D box frames and rover cages instead of flat rectangles. Each 20.4 mm socket is 20 mm deep and has 3.5 mm walls, with a 5.5 mm M5 clearance hole centred on every slot face for standard M5 T-nuts. A counterbored M5 hole runs up through the core for an end-tap bolt into the vertical rail. The hub is 67.4 mm across and 47.4 mm tall.
Slotted LiDAR Puck Riser Mount
A 112 mm adapter deck that bolts a hobby 2D LiDAR puck (RPLIDAR A1/A2, LD06/LD19 class) to a rover chassis: eight radial 3.6 mm slots accept any 2-, 4- or 8-screw pattern on a 34–64 mm bolt circle, so one plate fits whatever puck you bought. Four integral 18 mm posts raise the scan plane above the deck and land on a 90 mm cross pattern of 3.4 mm M3 clearance holes (at ±45 mm on X and Y); a 26 mm centre bore drops the USB/UART pigtail through, with a pair of zip-tie slots for strain relief. Prints plate-down with no overhangs and flips over to install — use M3 x 25–30 screws down through the ears into the deck.
N20 Gearmotor Zip-Tie V-Cradle Mount
A 48 x 34 x 20 mm chassis mount for micro metal gearmotors (N20/N30, 12 mm round can): a 90° V-cradle self-centres any can from about 10 to 14 mm diameter and two 4.5 x 2.4 mm tunnels take zip ties straight over the motor, so it needs no motor-specific bolt pattern. A 6 mm solid rear thrust wall stops the motor being pushed back by wheel side load, and the 4 mm base has four 3.4 mm M3 slots (11 mm of travel, on 30 x 25 mm centres) plus one round 3.4 mm M3 hole for a located third point.
Rocker-Bogie Rover Bogie Arm
Bogie link for a rocker-bogie rover or trailer suspension: a 148 x 60 mm flat arm that pivots on a press-fit 608 bearing (22.05 mm seat, 7 mm deep, 8.3 mm shaft bore through a 4 mm shoulder) with two 8 mm stub-axle clamps 120 mm apart and 45 mm below the pivot. Each axle end is a split clamp pulled up by an M3 screw into a captured M3 nut, so wheel axles set and lock without set screws; 9 mm thick plate with lightening holes prints flat, layers in the load plane.
NEMA 17 Sprung Suspension Swing Arm
A swing-arm suspension pod that bolts a NEMA 17 drive motor to a rover chassis through an 8 mm rod pivot, with an integrated printed leaf spring that keeps the wheel loaded over bumps. Motor face uses the 31 mm M3 bolt square with a 22.6 mm clearance bore for the 22 mm pilot boss; the pivot hub is a 16 mm long 8.3 mm bore (slip fit on 8 mm rod) set 95 mm from the motor axis, and the leaf tip pad bears on a chassis stop. Overall 127 x 48 x 16 mm, printed flat so all bending load runs in the XY plane instead of across layer lines.
Three-Way 8 mm Rod Corner Cube
A corner joint that ties three pieces of 8 mm smooth rod (or 8 mm tube/dowel) into a right-angle frame for a robot chassis, gantry or camera rig. Bores are 8.3 mm for a slip fit with 29 mm of rod engagement, offset inside the hub so all three rods clear one another, and each is locked by an M3 set screw in a 2.6 mm self-tapping hole. Arms are 18 mm square and 44 mm long; overall envelope 44 x 44 x 44 mm, about 26 cm3 of plastic.
Snap-Link Robot Tank Track
A six-link print-in-place tank track for small tracked robots and rovers: 16 mm pitch, 30 mm wide pads, 4 mm integral hinge pins in 5 mm bores (0.5 mm clearance everywhere), 106 x 30 x 10.5 mm per strip. Each clevis has a snap mouth that opens upward so printed strips push together into any length loop while track tension pulls against solid bore wall, and a center guide horn keeps the belt on a twin-wheel bogie; knuckles engage a 16 mm pitch sprocket.
NEMA 17 Differential Drive Chassis Deck
A 135 x 120 mm robot chassis deck with two integral 51 mm bulkheads that take a NEMA 17 stepper each on the verified 31 mm square M3 pattern (Ø23.2 mm pilot-boss clearance, shaft axis 28 mm above the deck underside for 70 mm wheels and ~7 mm ground clearance). The deck carries a Raspberry Pi 4/3B+ on 6 mm standoffs (58 x 49 mm, M2.5), a 20 mm caster pad, four M3 corner accessory holes, battery strap slots and lightening windows, so one print replaces a laser-cut plate plus two motor brackets.
608 Bearing Swivel Caster Mount
Print-in-place swivel caster for differential-drive robot chassis: the fork prints already captured on the base plate's retaining post and spins 360 degrees, so the third wheel stops scrubbing in turns. A standard 608 bearing (22 x 7 mm) drops between the 8 mm-spaced legs on an 8 mm rod or M8 bolt axle as the hard roller; the 46 x 40 x 5 mm plate bolts up with four M3 clearance holes on a 32 x 28 mm pattern, giving ~39 mm ride height and 21 mm of trail for self-centering.