Gears and transmission
PLAnt Murder Kitty Wedge-Pusher Chassis
- Bounding box
- 130.0 × 140.0 × 42.0 mm
- Engine
- Precision B-rep
- Parameters
- 31
- Published
- November 8, 2026
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The prompt
Design a 3D-printable, single-piece low-profile 1lb Plastic Antweight (PLAnt) combat robot chassis in the exact geometric style of the 'Murder Kitty' wedge-pusher robot, fully customized to fit specific hardware components. OVERALL DIMENSIONS & CHASSIS GEOMETRY: - Exterior footprint: 130mm wide x 140mm long x 42mm overall height. - Front Wedge: Integrated 35-degree continuous sloped front ramp spanning the entire 130mm front width, tapering down to a 1.5mm flush front ground-clearance lip for wedging under opponents. - Side Geometry: Vertical outer side walls with recessed wheel pods to protect the tires from lateral impacts. - Top Surface: Open-top main cavity with a 2mm deep perimeter shelf (lip) around the top edge to flush-mount a removable 2mm top armor lid. Include six perimeter M3 screw pilot holes (heat-set insert bosses) in the corners and midpoint walls. JGY-370 WORM GEAR MOTOR HOUSINGS (LEFT & RIGHT): - Two internal side pockets specifically shaped for JGY-370 right-angle worm gear motors. - Gearbox Pocket Dimensions: Rectangular side-mount cavity measuring 37mm long x 32mm wide x 25mm deep on each side of the chassis, positioned horizontally along the inner walls. - Motor Can Tube: Rear cylindrical cutout extending 31mm back from the gearbox pocket with a 24.5mm diameter to snugly seat the silver motor body. - Drive Shaft Exit: 7mm diameter lateral hole centered on the gearbox face to allow the 6mm D-shaft to extend sideways into the wheel well. - Axle Offset: Position the output shaft hole precisely 18mm above the bottom plane of the chassis so the wheels extend 3mm below the bottom plate for optimal ground traction. WHEEL WELL SPECIFICATIONS: - Dual semi-enclosed outer wheel wells: 42mm diameter x 26mm deep to fully house 37mm diameter x 24mm wide yellow rubber tires. - Provide 2.5mm clearance around the tire perimeter to prevent track jam from debris. INTERNAL ELECTRONICS CAVITIES & WIRE ROUTING: - Red Motor Driver Cavity: Central rectangular floor slot measuring 36mm x 36mm x 18mm, located directly between the two JGY-370 gearbox housings, with open top access for blue terminal screw wiring. - ESP32 Microcontroller Slot: Rear-center horizontal pocket measuring 56mm x 29mm x 14mm with 1.5mm bottom clearance to isolate solder joints. - Wire Pass-Through Channels: 8mm x 8mm internal wire conduits connecting the JGY-370 motor bays to the central driver cavity, and from the driver cavity to the ESP32 pocket. - Rear Power Pocket: Dedicated rear cutout (50mm x 35mm x 22mm) for battery connector access and main power switch mounting. STRUCTURAL INTEGRITY & PRINTABILITY: - Perimeter Wall Thickness: 3.5mm solid walls for high impact defense against combat spinners. - Bottom Plate Thickness: 2.5mm solid base. - Internal Fillets: 2.5mm radius fillets on all internal 90-degree corners to prevent stress fractures during combat. - Output file: Clean parametric 3D solid model (STEP format) ready for FDM printing in PLA+ or TPU.
Parameters
| Name | Value | Range |
|---|---|---|
| Overall Width | 130 mm | 100 – 180 |
| Overall Length | 140 mm | 100 – 200 |
| Overall Height | 42 mm | 30 – 70 |
| Perimeter Wall Thickness | 3.5 mm | 2 – 6 |
| Bottom Plate Thickness | 2.5 mm | 1.5 – 5 |
| Internal Corner Fillet | 2.5 mm | 0.5 – 4 |
| Front Wedge Angle | 35 deg | 20 – 55 |
| Front Ground Lip Height | 1.5 mm | 0.8 – 4 |
| Gearbox Pocket Width | 32 mm | 25 – 45 |
| Gearbox Pocket Length | 37 mm | 30 – 50 |
| Gearbox Pocket Depth | 25 mm | 15 – 35 |
| Motor Can Cutout Diameter | 24.5 mm | 18 – 32 |
| Motor Can Cutout Length | 31 mm | 20 – 45 |
| Drive Shaft Exit Hole | 7 mm | 5 – 12 |
| Axle Height Above Bottom | 18 mm | 10 – 28 |
| Wheel Center From Front | 86.5 mm | 60 – 120 |
| Wheel Well Diameter | 42 mm | 30 – 55 |
| Wheel Well Depth | 26 mm | 15 – 35 |
| Motor Driver Cavity Width | 36 mm | 25 – 50 |
| Motor Driver Cavity Length | 36 mm | 25 – 50 |
| Motor Driver Cavity Depth | 18 mm | 10 – 30 |
| ESP32 Pocket Width | 56 mm | 35 – 70 |
| ESP32 Pocket Length | 29 mm | 20 – 45 |
| ESP32 Pocket Depth | 14 mm | 8 – 25 |
| Rear Power Pocket Width | 50 mm | 30 – 70 |
| Rear Power Pocket Height | 35 mm | 20 – 40 |
| Rear Power Pocket Depth | 22 mm | 12 – 35 |
| Wire Channel Width | 8 mm | 4 – 15 |
| Wire Channel Height | 8 mm | 4 – 15 |
| M3 Pilot Hole Diameter | 3 mm | 2 – 5 |
| M3 Pilot Hole Depth | 10 mm | 4 – 18 |
Every value above is a live dimension. Open a model like this in the editor and each one becomes a slider you can drag before exporting.
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