Brackets and mounts
Pi4 Enclosure with Bay & Fan
- Bounding box
- 211.0 × 155.0 × 49.5 mm
- Engine
- Precision B-rep
- Parameters
- 27
- Published
- November 2, 2026
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The prompt
Design a one-piece bottom enclosure measuring 211 mm long, 155 mm wide, and 33 mm tall with 3 mm thick walls and rounded 8 mm corner radii. The shell should have an open top and a removable bottom service panel secured with six recessed M3 screws. Include internal ribs every 30–40 mm for structural rigidity while maintaining a lightweight design. Create four raised Raspberry Pi 4 mounting bosses in the rear-left corner using M2.5 screw holes and 6 mm standoff height. Immediately to the right of the Pi, create a centered 40 × 40 × 10 mm fan compartment with mounting holes, airflow ducting, and clearance for wiring. On the far right, create a recessed storage bay capable of accepting either a standard 2.5-inch SATA SSD or a USB SSD enclosure with retaining rails and mounting screw holes. Beneath the SSD bay, leave a recessed optional battery compartment sized for either two 18650 cells or a flat LiPo battery. Include molded cable channels between all compartments that terminate beneath the hinge assembly. Add ventilation slots beneath the fan and along the rear edge while keeping all walls printable without supports.
Parameters
| Name | Value | Range |
|---|---|---|
| Outer length | 211 mm | 150 – 300 |
| Outer width | 155 mm | 100 – 200 |
| Outer height | 33 mm | 20 – 60 |
| Wall thickness | 3 mm | 1.5 – 5 |
| Outer corner radius | 8 mm | 2 – 15 |
| Inner corner radius | 5 mm | 0 – 15 |
| Rib thickness | 2 mm | 1 – 4 |
| Rib spacing (along length) | 35 mm | 20 – 50 |
| Pi boss X inset from rear-left | 5 mm | 2 – 20 |
| Pi boss Y inset from rear-left | 5 mm | 2 – 20 |
| Boss diameter | 5 mm | 3 – 8 |
| Boss standoff height | 6 mm | 4 – 12 |
| Pi4 hole X spacing | 58 mm | 50 – 70 |
| Pi4 hole Y spacing | 49 mm | 40 – 60 |
| Fan compartment side | 40 mm | 30 – 60 |
| Fan compartment wall thickness | 2 mm | 1 – 3 |
| Fan compartment height | 10 mm | 8 – 20 |
| Gap between Pi bosses and fan | 10 mm | 5 – 20 |
| SSD bay length | 100 mm | 80 – 120 |
| SSD bay width | 70 mm | 50 – 80 |
| SSD recess depth | 2 mm | 1 – 4 |
| SSD bay margin from wall | 5 mm | 2 – 10 |
| 18650 cell diameter | 18 mm | 10 – 22 |
| 18650 compartment length | 65 mm | 50 – 80 |
| Battery recess depth | 3 mm | 1 – 5 |
| Ventilation slot width | 2 mm | 1 – 4 |
| Ventilation slot length | 15 mm | 10 – 30 |
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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