Brackets and mounts
Water Rocket Fin with Curved Bottle Pad
- Bounding box
- 73.6 × 20.0 × 122.9 mm
- Engine
- Precision B-rep
- Parameters
- 10
- Published
- October 28, 2026
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The prompt
Single High-Stability Rocket Fin with Curved Mounting Pad (Recommended) "A parametric 3D printable water rocket fin designed for a 500ml Coca-Cola PET bottle with a body outer diameter of 67.1mm. The model features a curved cylindrical mounting pad at the base with an inner radius of 33.55mm, base length of 110mm, base width of 20mm, and pad thickness of 2mm. Sitting centered on top of the curved pad is a rigid trapezoidal fin blade with a root chord of 105mm, tip chord of 35mm, span height of 65mm, sweep back angle of 35 degrees, and a main body thickness of 2.2mm tapering smoothly to 1.3mm at the tip for aerodynamic drag reduction and high directional flight stability. Manifold solid, zero overhangs, 3D print ready."
Parameters
| Name | Value | Range |
|---|---|---|
| Bottle Outer Diameter | 67.1 mm | 30 – 130 |
| Pad Wall Thickness | 2 mm | 1 – 6 |
| Pad Length (axial) | 110 mm | 40 – 250 |
| Pad Width (chord) | 20 mm | 8 – 60 |
| Root Chord | 105 mm | 30 – 240 |
| Tip Chord | 35 mm | 5 – 120 |
| Span Height | 65 mm | 10 – 150 |
| Sweep Back Angle | 35 deg | 0 – 70 |
| Root Thickness | 2.2 mm | 0.8 – 8 |
| Tip Thickness | 1.3 mm | 0.4 – 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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