Enclosures and housings
Modular Microbot
- Bounding box
- 43.0 × 65.0 × 20.0 mm
- Engine
- Precision B-rep
- Parameters
- 30
- Published
- October 20, 2026
Download
Free to download and use. See the terms.
The prompt
Design a single modular microbot, inspired by the Big Hero 6 microbots, as a 3D-printable CAD model. OVERALL SHAPE - Low, rectangular body, roughly 40 mm long x 30 mm wide x 15 mm tall, with rounded outer edges (about 2 mm fillets). - On top, a smooth cylindrical housing running across the width of the body, sitting slightly proud of the top surface. Make it a separate part so it can be hollow for electronics. - A small circular indicator LED hole, 2 mm diameter, centered on top of the housing. HINGE ARMS - Two flat arms, one on each long side of the body, each about 5 mm thick. - Each arm has a rounded end and a cylindrical pivot pin (about 3 mm diameter) so the bot can rotate relative to its neighbor. - Arms rotate about a shared axis running across the body, with a 0.3 mm clearance gap so the joint moves freely when printed. CONNECTION END A (male side) - Two small rectangular pegs and two L-shaped latch tabs sticking out from the end face, each about 2 mm wide and 3 mm long. - A few small rectangular slots and round holes (1.5 mm to 2 mm) on the same face for the locking mechanism. - A 6 mm diameter x 2 mm deep circular pocket for a neodymium magnet. CONNECTION END B (female side) - A flat end face with matching slots to receive the pegs and tabs from End A, with 0.2 mm clearance. - A 6 mm round disc or pocket for a magnet, positioned so it lines up with the magnet on End A of the next bot, with opposite polarity. REQUIREMENTS - Pegs and slots must mate so that two identical bots can connect end to end and lock. - Keep walls at least 1.5 mm thick for 3D printing. - Add an internal cavity in the body for a small battery and circuit board. - Export as separate bodies: body, top housing, left arm, right arm, and magnet inserts. STYLE - Dark gray matte finish, with a small light-colored accent on the LED and connectors.
Parameters
| Name | Value | Range |
|---|---|---|
| Body Length | 40 mm | 20 – 100 |
| Body Width | 30 mm | 15 – 80 |
| Body Height | 15 mm | 5 – 50 |
| Cavity Length | 30 mm | 10 – 80 |
| Cavity Width | 20 mm | 10 – 60 |
| Cavity Depth | 10 mm | 2 – 40 |
| Housing Diameter | 8 mm | 4 – 20 |
| Housing Length | 30 mm | 10 – 60 |
| Housing Center Z | 16 mm | 10 – 30 |
| Bore Diameter | 5 mm | 2 – 15 |
| LED Hole Diameter | 2 mm | 1 – 5 |
| Arm Length | 10 mm | 5 – 30 |
| Arm Thickness | 5 mm | 2 – 15 |
| Arm Height | 10 mm | 5 – 30 |
| Pivot Hole Diameter | 3 mm | 1 – 10 |
| Pivot Hole Z | 10 mm | 2 – 14 |
| Peg Width | 2 mm | 1 – 6 |
| Peg Length | 3 mm | 1 – 10 |
| Peg Height | 2 mm | 1 – 6 |
| Peg Y Offset | 5 mm | 0 – 12 |
| Peg Z | 7.5 mm | 2 – 13 |
| Tab Y Offset | 10 mm | 0 – 15 |
| Tab Z | 12 mm | 5 – 14 |
| Slot Width | 2 mm | 1 – 6 |
| Slot Length | 2 mm | 1 – 8 |
| Slot Height | 2 mm | 1 – 6 |
| Locking Hole Diameter | 1.5 mm | 1 – 4 |
| Magnet Diameter | 6 mm | 3 – 12 |
| Magnet Depth | 2 mm | 1 – 6 |
| Mating Clearance | 0.2 mm | 0.1 – 1 |
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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