Mechanical parts
Finned Hollow Ring Rotor
- Bounding box
- 240 × 240 × 42.0 mm
- Engine
- 3D Printing B-rep
- Parameters
- 18
- Published
- November 10, 2026
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The prompt
PART 1 — The ring Create a hollow cylinder ring. Outer diameter 240mm, inner diameter 200mm, height 40mm. Walls are 3mm thick. The inside is hollow and sealed (like a donut/torus but with flat top and bottom). Add two circular holes on the bottom face, each 12mm diameter, 4mm deep, positioned opposite each other. PART 2 — The top surface (add to Part 1): On top of the ring, add 5 identical flat fins equally spaced in a circle (72 degrees apart). Each fin is 80mm long, 45mm wide, 3mm thick, and tilts upward at 20 degrees from horizontal, pointing outward from the centre. The fins start at a central hub 25mm from the centre. PART 3 — The centre hole: In the exact centre of the whole component, cut a circular hole 50mm diameter going all the way through from top to bottom. PART 4 — The valleys between fins: Between each fin, add a smooth curved ramp surface that slopes downward from the outer edge toward the central hole. The ramp angle is 25 degrees. All edges where ramps meet fins should be smooth rounded fillets, radius 6mm.
Parameters
| Name | Value | Range |
|---|---|---|
| Overall outer diameter | 240 mm | 100 – 300 |
| Ring inner diameter | 200 mm | 50 – 260 |
| Ring height | 40 mm | 10 – 100 |
| Wall thickness | 3 mm | 1.2 – 6 |
| Bottom hole diameter | 12 mm | 6 – 30 |
| Bottom hole depth | 4 mm | 1 – 10 |
| Bottom hole pitch radius | 110 mm | 80 – 118 |
| Number of fins | 5 mm | 3 – 12 |
| Fin length | 80 mm | 20 – 120 |
| Fin width | 45 mm | 10 – 80 |
| Fin thickness | 3 mm | 1.2 – 8 |
| Fin upward tilt | 20 deg | 0 – 45 |
| Fin root radius | 25 mm | 12 – 60 |
| Central hub outer diameter | 70 mm | 30 – 120 |
| Ramp outer radius | 105 mm | 80 – 120 |
| Ramp angle | 25 deg | 5 – 45 |
| Fillet radius | 6 mm | 1 – 12 |
| Central through hole diameter | 50 mm | 10 – 120 |
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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