Enclosures and housings
Rectangular Smartwatch Enclosure (Snap-Fit, NATO Loops)
- Bounding box
- 49.0 × 44.0 × 19.5 mm
- Engine
- Precision B-rep
- Parameters
- 16
- Published
- October 3, 2026
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The prompt
A two-part rectangular smartwatch enclosure. The internal cavity must be precisely 43mm by 38mm by 9mm to friction-fit a Waveshare ESP32-S3 1.69 Touch board without any internal standoffs or screw posts. The backplate must feature two external, vertically oriented loops spaced 40mm apart. Each loop needs a 22mm by 2mm internal slot to accommodate a standard 20mm NATO watch strap. The front and back halves should connect using a simple snap-fit lip rather than screws.
Parameters
| Name | Value | Range |
|---|---|---|
| Body Width (X) | 49 mm | 35 – 80 |
| Body Length (Y) | 44 mm | 30 – 70 |
| Backplate Thickness | 5 mm | 3 – 10 |
| Front Shell Height | 10 mm | 5 – 20 |
| Cavity Width (X) | 43 mm | 25 – 70 |
| Cavity Length (Y) | 38 mm | 20 – 60 |
| Cavity Height (Z) | 9 mm | 4 – 20 |
| Lower Cavity Recess (in backplate) | 3 mm | 1 – 5 |
| Snap Lip Rib Width | 1.2 mm | 0.6 – 2.5 |
| Snap Lip Engagement | 1.6 mm | 0.5 – 3 |
| Snap Groove Clearance | 0.1 mm | 0.05 – 0.4 |
| Strap Loop Spacing | 40 mm | 20 – 70 |
| Loop Slot Width (X) | 22 mm | 10 – 40 |
| Loop Slot Height (Z) | 2 mm | 1 – 5 |
| Loop Wall Thickness | 1.5 mm | 0.8 – 4 |
| Loop Thickness (Y) | 3 mm | 1.5 – 8 |
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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