Brackets and mounts
Windmill Rotor (printed collet hub, glued blades)
- Bounding box
- 156.8 × 179.3 × 45.2 mm
- Engine
- Precision B-rep
- Parameters
- 36
- Published
- November 7, 2026
Download
Free to download and use. See the terms.
The prompt
All-printed windmill rotor with glued replaceable blades and a hardware-free hub: slotted tapered collet with a printed tapered-thread collet nut that clamps the 8 mm aluminum shaft (no set screws, no bolts)
Parameters
| Name | Value | Range |
|---|---|---|
| Rotor diameter | 200 mm | 100 – 400 |
| Number of blades | 3 | 2 – 6 |
| Blade chord at root | 24 mm | 14 – 40 |
| Blade chord at tip | 12 mm | 8 – 30 |
| Blade thickness at root | 4 mm | 2 – 6 |
| Blade thickness at tip | 1.6 mm | 1.2 – 4 |
| Camber (fraction of chord) | 0.06 | 0 – 0.1 |
| Design tip-speed ratio | 3 | 1.5 – 6 |
| Design angle of attack | 8 deg | 2 – 14 |
| Maximum pitch at root | 36 deg | 20 – 60 |
| Round neck length outside hub | 5 mm | 3 – 10 |
| Root peg diameter | 7 mm | 5 – 9 |
| Socket clearance on peg (diametral, glue gap) | 0.3 mm | 0.1 – 0.6 |
| Hub wall left between socket and shaft bore | 2 mm | 1.5 – 4 |
| Key flat depth on peg (sets blade angle) | 0.8 mm | 0.4 – 1.5 |
| Extra gap under key flat (air and glue channel) | 0.4 mm | 0.1 – 0.8 |
| Glue grooves on peg | 2 | 0 – 3 |
| Glue groove depth | 0.6 mm | 0.3 – 1 |
| Glue groove width | 1.2 mm | 0.8 – 2.5 |
| Glue well (socket mouth chamfer depth) | 2 mm | 0.5 – 3 |
| Hub body outer diameter | 28 mm | 22 – 40 |
| Hub body length (blade sockets) | 16 mm | 14 – 20 |
| Spinner nose height | 12 mm | 6 – 24 |
| Bore for 8 mm shaft | 8.2 mm | 8 – 8.6 |
| Optional flat in bore (0 = round bore; file a matching flat on the shaft) | 0 mm | 0 – 1.2 |
| Collet length below hub body | 14 mm | 10 – 20 |
| Collet core radius at the tip | 6.2 mm | 5.5 – 8 |
| Collet taper angle (the clamping wedge) | 6 deg | 3 – 10 |
| Thread pitch | 2.5 mm | 2 – 4 |
| Thread depth | 1 mm | 0.6 – 1.6 |
| Nut-to-collet clearance (per side) | 0.2 mm | 0.1 – 0.4 |
| Slit width between collet fingers | 1.2 mm | 0.8 – 2 |
| Collet nut outer diameter | 22 mm | 20 – 28 |
| Collet nut height | 9 mm | 7 – 12 |
| Nut start height above collet tip (loose position) | 0.5 mm | 0 – 2 |
| Gap between collet tip and cover boss (reference shaft) | 3 mm | 1 – 10 |
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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