Enclosures and housings
Ultra-Thin Octo Watch Case (Mid-case + Bezel)
- Bounding box
- 40.0 × 48.0 × 1.7 mm
- Engine
- Precision B-rep
- Parameters
- 17
- Published
- October 13, 2026
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The prompt
Create a parametric solid 3D CAD model of an ultra-thin integrated luxury watch case inspired by the Bvlgari Octo Finissimo Ultra. Shape the main case as a 40mm diameter structure, using a distinct architectural layout consisting of a circular bezel sitting on a multi-faceted octagonal mid-case. The total assembly height must be exactly 1.70mm from the top of the flat crystal plane to the bottom of the solid caseback. Design the caseback and mid-case as a unified, monolithic structural component. Extrude flat, geometric, sandblasted-style surfaces with sharp angular facets mirroring the Octo profile. Integrate two broad, flat, geometric lugs seamlessly into the chassis with a 20mm width to accept an integrated flat link bracelet. On the top face, construct two separate circular, shallow geometric cavities: a larger main cavity on the left side to act as the structural barrel/ratchet-wheel bed, and a offset time-display regulator cavity. Ensure a minimum wall thickness of 0.2mm on the bottom plane for maximum structural rigidity. Export as a manifold, cleanly geometric STEP file with editable feature constraints.
Parameters
| Name | Value | Range |
|---|---|---|
| Case Diameter (across flats) | 40 mm | 25 – 60 |
| Mid-case / Caseback Height | 1.2 mm | 0.4 – 4 |
| Bezel Outer Diameter | 40 mm | 25 – 60 |
| Bezel Inner Diameter (aperture) | 32 mm | 15 – 50 |
| Bezel Height | 0.5 mm | 0.1 – 3 |
| Bezel Top Edge Chamfer | 0.1 mm | 0.02 – 0.5 |
| Barrel / Ratchet Bed Diameter | 20 mm | 4 – 32 |
| Barrel Bed Depth | 0.3 mm | 0.05 – 0.9 |
| Barrel Bed X Offset | -5.5 mm | -18 – 0 |
| Barrel Bed Y Offset | 0 mm | -10 – 10 |
| Regulator Cavity Diameter | 10 mm | 3 – 20 |
| Regulator Cavity Depth | 0.2 mm | 0.05 – 0.6 |
| Regulator Cavity X Offset | 10.5 mm | 0 – 18 |
| Regulator Cavity Y Offset | 0 mm | -10 – 10 |
| Lug / Bracelet Width | 20 mm | 6 – 34 |
| Lug Protrusion Beyond Case | 4 mm | 0 – 14 |
| Lug Root Overlap Into Case | 6 mm | 1 – 12 |
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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