Gears and transmission
Marble-Run Toy Ring
- Bounding box
- 26.0 × 34.5 × 8.0 mm
- Engine
- Precision B-rep
- Parameters
- 15
- Published
- October 14, 2026
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The prompt
Generate a wearable ring inspired by colourful 1990s modular marble-run toys. Use a smooth, rounded band with a miniature marble-run structure integrated into the top: curved open channels, a small spiral funnel and short tubular supports. A single polished sphere should sit securely within the track, suggesting a marble paused mid-run. Keep the composition playful and asymmetrical, with chunky, rounded geometry and a compact silhouette rather than a tall tower. Translate the toy’s plastic forms into polished metal, with optional contrasting enamel accents in primary colours. Make the sphere fixed, not loose, and all components connected as one manufacturable design. Use smooth internal surfaces, softened edges and no fragile unsupported details. Ring inner diameter: 17 mm. Band thickness: approximately 2 mm. Keep the decorative structure within approximately 22 mm wide and 10 mm above the finger. Avoid sharp edges, text, logos and recognisable branded elements.
Parameters
| Name | Value | Range |
|---|---|---|
| Inner Diameter | 17 mm | 12 – 30 |
| Band Wall Thickness | 2 mm | 0.8 – 4 |
| Band Width | 8 mm | 3 – 14 |
| Outer Groove Diameter | 2.5 mm | 0.5 – 5 |
| Edge Fillet Radius | 0.8 mm | 0 – 2 |
| Decorative Top Width | 22 mm | 14 – 30 |
| Decorative Top Height Above Finger | 10 mm | 4 – 16 |
| Open Channel Radius | 2.5 mm | 1 – 5 |
| Funnel Base Diameter | 8 mm | 4 – 12 |
| Funnel Height | 5 mm | 2 – 8 |
| Funnel Top Diameter | 4 mm | 2 – 8 |
| Spiral Bead Groove Radius | 0.8 mm | 0.3 – 1.5 |
| Marble Sphere Diameter | 8 mm | 3 – 12 |
| Marble Horizontal Offset | 0 mm | -8 – 8 |
| Tubular Support Outer Diameter | 4 mm | 2 – 6 |
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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