File:Septafoil 71 knot rotating.gif
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Size of this preview: 470 × 470 pixels. Other resolution: 240 × 240 pixels.
Original file (470 × 470 pixels, file size: 3.85 MB, MIME type: image/gif, looped, 56 frames, 8.0 s)
Summary
| Description |
English: A rotating 3D-printed model of the 71 knot (the septafoil knot, or the (2,7) torus knot). The model is a closed tube whose centreline follows the (2,7) torus knot. A channel runs the full length of the tube and holds loose steel balls; a slot along the outside of the channel keeps the balls visible but captive, so they roll along the knot as the model is turned.
Printed in one piece in PLA. The tube radius is 0.28 of the knot's major radius, close to the thickest tube this knot can carry before it intersects itself. |
| Date | |
| Source | Own work |
| Author | Ivy and Iris |
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This is a retouched picture, which means that it has been digitally altered from its original version. Modifications: The background is a single static synthesised paper plate, fitted once to the real background and rendered across the whole canvas so it does not flicker between frames. The rotation axis is stabilised and light denoising was applied. The subject itself is unretouched..
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Licensing
I, the copyright holder of this work, hereby publish it under the following license:
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- to remix – to adapt the work
- Under the following conditions:
- attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
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File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 03:17, 30 July 2026 | | 470 × 470 (3.85 MB) | wikimediacommons>IvyHarvest | =={{int:filedesc}}== {{Information |description={{en|1=A rotating 3D-printed model of the '''7<sub>1</sub> knot''' (the septafoil knot, or the (2,7) torus knot). The model is a closed tube whose centreline follows the (2,7) torus knot. A channel runs the full length of the tube and holds loose steel balls; a slot along the outside of the channel keeps the balls visible but captive, so they roll along the knot as the model is turned. Printed in one piece in PLA. The tube radius is 0.28 of the... |
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