Mechanical parts
Three-Lobe Fidget Spinner
- Bounding box
- 65.3 × 67.5 × 8.0 mm
- Engine
- Precision B-rep
- Parameters
- 10
- Published
- September 4, 2026
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The prompt
Create a premium, ergonomic **single-bearing fidget spinner** with a custom organic three-lobed shape. Use one centered ball bearing measuring **12.64 mm outer diameter, 4.60 mm inner diameter, and 4.95 mm thick**. Make the bearing pocket **12.80 mm diameter × 5.10 mm deep**. Overall size about **70 mm × 70 mm × 8 mm**. Give each lobe smooth rounded finger grooves and curved ergonomic surfaces for easy flicking and comfortable palm use. Keep the mass rotationally balanced, with slightly heavier outer lobes for longer spin time. Smooth all edges and make it optimized for flat FDM printing without supports.
Parameters
| Name | Value | Range |
|---|---|---|
| Overall Diameter | 70 mm | 50 – 100 |
| Thickness | 8 mm | 5 – 12 |
| Bearing Outer Diameter | 12.64 mm | 10 – 20 |
| Bearing Inner Diameter | 4.6 mm | 3 – 10 |
| Bearing Thickness | 4.95 mm | 3 – 8 |
| Pocket Diameter | 12.8 mm | 10 – 20 |
| Pocket Depth | 5.1 mm | 3 – 8 |
| Wall Thickness Around Bearing | 3 mm | 2 – 6 |
| Finger Groove Radius | 12 mm | 8 – 20 |
| Edge Fillet Radius | 2 mm | 0.5 – 4 |
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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