Brackets and mounts
Left-Handed Keyboard Lower Shell
- Bounding box
- 160.0 × 100.0 × 30.0 mm
- Engine
- Precision B-rep
- Parameters
- 22
- Published
- October 7, 2026
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The prompt
Create a compact ergonomic LEFT-HANDED one-handed keyboard enclosure, inspired by the general form factor of a CharaChorder. The enclosure must have mounting openings and internal space for several future 8-direction mechanical input modules, a PCB, microswitches, wiring, a LiPo battery, USB-C connector and status LED, but do not model these components. Make the enclosure modular and 3D-printable, with an accessible upper/lower shell and internal PCB mounting points. The bottom must include a robust slide-in/slide-out locking interface for interchangeable future bases, similar to a sliding remote-control battery cover; do NOT create the bases, only the standardized interface. Keep enough internal space and mounting flexibility for future electronics upgrades and custom embedded firmware.
Parameters
| Name | Value | Range |
|---|---|---|
| Overall Length | 160 mm | 120 – 220 |
| Overall Width | 100 mm | 80 – 150 |
| Overall Height | 30 mm | 22 – 45 |
| Wall Thickness | 2.5 mm | 1.5 – 5 |
| Bottom Thickness | 3 mm | 2 – 6 |
| Outer Corner Radius | 5 mm | 0 – 10 |
| PCB Boss X Offset | 55 mm | 20 – 70 |
| PCB Boss Y Offset | 35 mm | 15 – 45 |
| Boss Diameter | 7 mm | 4 – 12 |
| Boss Hole Diameter | 2.6 mm | 1.5 – 4.5 |
| Boss Height | 6 mm | 3 – 10 |
| USB-C Cutout Width | 9 mm | 7 – 12 |
| USB-C Cutout Height | 3.2 mm | 2.5 – 4.5 |
| USB-C Cutout Z Height | 12 mm | 8 – 20 |
| LED Hole Diameter | 3 mm | 2 – 5 |
| LED Hole Z Height | 12 mm | 8 – 20 |
| LED Hole Y Offset | -30 mm | -45 – 45 |
| Slide Slot Stop Length | 10 mm | 5 – 25 |
| Slide Opening Width | 32 mm | 20 – 50 |
| Slide Inner Width | 40 mm | 25 – 60 |
| Slide Depth | 2.2 mm | 1 – 4 |
| Slide Lip Height | 1 mm | 0.5 – 2 |
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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