Enclosures and housings
Microbrand Watch Case Assembly
- Bounding box
- 43.8 × 46.0 × 10.4 mm
- Engine
- Precision B-rep
- Parameters
- 17
- Published
- August 7, 2026
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The prompt
Create a parametric 3D CAD model of a microbrand watch case assembly with the following precise dimensions and geometry: MAIN CASE BODY: - Overall case shape: Hexagonal diamond-rhombus geometry with flat top facets and chamfered edges. - Outer case width (X/Y waist): 39.0 mm diameter across the widest point. - Overall vertical thickness (Z-height): 9.8 mm maximum from crystal apex to case back. - Material: 316L Stainless Steel profile. - Central movement cavity: Cylindrical bore with a diameter of 26.20 mm and a depth clearance of 4.20 mm (tailored for Miyota 9015 movement stack). BEZEL & LUGS: - Bezel: Integrated octagonal/rhombus stepped bezel, outer diameter 38.0 mm, inner aperture diameter 31.0 mm for crystal seating. - Lugs: Recessed integrated lug channels extending from the main body, lug-to-lug overall span of 46.0 mm, configured for flush-fit 20 mm integrated strap attachment. CROWN TUBE & ASSEMBLY: - Crown position: 3 o'clock wall position. - Crown tube bore: Threaded side-wall aperture with 2.0 mm diameter for screw-down crown stem insertion. - Crown dimensions: Hexagonal screw-down crown, 5.5 mm outer diameter, 2.5 mm thickness. CRYSTAL & CASE BACK CAVITIES: - Front crystal seat: Internal stepped rebate around dial opening, 31.0 mm diameter, 1.2 mm depth for flat sapphire crystal. - Case back seat: Threaded circular rear opening, 32.0 mm outer thread diameter with 1.0 mm O-ring gasket compression channel. OUTPUT SPECIFICATION: - Export as clean, watertight solid geometry in B-Rep .STEP format.
Parameters
| Name | Value | Range |
|---|---|---|
| Case Width (across flats) | 39 mm | 30 – 60 |
| Total Case Height | 9.8 mm | 5 – 15 |
| Hexagon Part Height | 5.8 mm | 3 – 9.5 |
| Bezel Outer Diameter (across octagon flats) | 38 mm | 30 – 50 |
| Crystal Diameter | 31 mm | 25 – 40 |
| Crystal Thickness | 1.2 mm | 0.5 – 2 |
| Movement Cavity Diameter | 26.2 mm | 20 – 35 |
| Movement Cavity Depth | 4.2 mm | 2 – 6 |
| Case Back Diameter | 32 mm | 25 – 40 |
| Case Back Thickness | 2.5 mm | 1 – 5 |
| Crown Diameter (across flats) | 5.5 mm | 4 – 10 |
| Crown Thickness | 2.5 mm | 1 – 5 |
| Crown Tube Outer Diameter | 4 mm | 2 – 6 |
| Crown Tube Length | 2 mm | 1 – 5 |
| Crown Stem Bore Diameter | 2 mm | 0.5 – 3 |
| Lug-to-Lug Span | 46 mm | 40 – 60 |
| Lug Width | 20 mm | 15 – 25 |
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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