Brackets and mounts
WearCare Top Enclosure Shell
- Bounding box
- 76.0 × 61.0 × 17.5 mm
- Engine
- Precision B-rep
- Parameters
- 25
- Published
- November 3, 2026
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The prompt
Create a dimensionally precise, parametric 3D CAD model of the TOP ENCLOSURE SHELL for a wearable IoT emergency wristband called WearCare. This is a mechanical enclosure component intended for a real 3D-printed electronics prototype, not a decorative smartwatch model. UNITS: millimeters. TARGET EXTERNAL DIMENSIONS: - Length: 75 mm - Width: 50 mm - Maximum external height of top shell: approximately 12 mm - Wall thickness: 2 mm - Corner radius: 6 mm GEOMETRY: Create a rounded rectangular enclosure shell with a gently curved top surface and a flat internal base. The outer shape should resemble a compact smartwatch housing. Use smooth external edges and rounded corners. The bottom must remain OPEN to allow installation of electronics and connection to a separate bottom enclosure. Create a continuous 2 mm wall structure with an internal cavity. INTERNAL MOUNTING: Create mounting bosses for a removable PCB assembly. The mounting bosses must be separate from the electronics cavity and must not intersect the PCB mounting envelope. Include four corner mounting positions where practical. Use M2 screw-compatible pilot holes, but do not assume a final screw-hole diameter without verification. EXTERNAL FEATURES: 1. Two LED openings positioned side-by-side on the top surface. 2. One SOS push-button opening on the top surface. 3. One buzzer acoustic grille on the top surface. 4. WearCare branding area, without raised text that interferes with the cover. 5. Smooth external perimeter. 6. Rounded strap attachment ends on both short sides. Do not include the electronic components as fused geometry. Do not create the strap as part of this shell. Do not create vibration motor pods. Do not create the bottom enclosure. Do not create charging contacts. Create separate, editable parametric features for the shell, openings, mounting bosses, and strap attachment structures. IMPORTANT: This is a preliminary shell geometry. Do not claim that the internal electronics have been verified to fit. Export the result as an editable STEP solid and STL suitable for further engineering refinement in FreeCAD.
Parameters
| Name | Value | Range |
|---|---|---|
| Overall Length (incl. lugs) | 75 mm | 40 – 120 |
| Overall Width | 50 mm | 30 – 90 |
| Shell Height | 12 mm | 6 – 30 |
| Wall Thickness | 2 mm | 1 – 5 |
| Top Wall Thickness | 2 mm | 1 – 6 |
| Corner Radius | 6 mm | 1 – 20 |
| Top Dome Radius | 1500 mm | 300 – 5000 |
| Strap Lug Protrusion | 5 mm | 2 – 15 |
| Strap Lug Width | 9 mm | 4 – 20 |
| Strap Lug Thickness | 4 mm | 1.5 – 10 |
| Strap Pin Hole Diameter | 2.5 mm | 1 – 6 |
| LED Window Length | 4 mm | 1 – 10 |
| LED Window Width | 2.5 mm | 1 – 8 |
| LED Centre Spacing | 20 mm | 6 – 40 |
| LED Y Offset | 12 mm | -20 – 20 |
| SOS Button Opening Diameter | 10 mm | 4 – 20 |
| SOS Button Y Offset | -12 mm | -20 – 20 |
| Buzzer Grille Hole Diameter | 1.2 mm | 0.5 – 4 |
| Buzzer Grille Pitch | 2.5 mm | 1.2 – 6 |
| Buzzer Grille Holes per Row | 3 pcs | 1 – 5 |
| Mounting Boss Diameter | 6 mm | 2 – 12 |
| M2 Pilot Hole Diameter | 1.6 mm | 0.8 – 4 |
| Mounting Boss Height | 5 mm | 1 – 12 |
| Boss X Offset | 24 mm | 5 – 35 |
| Boss Y Offset | 16 mm | 5 – 22 |
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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