Trefoil Knot Marble Run
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An endless marble run in the shape of a trefoil knot in 2 variations
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Updated at source:
Model information
- Source
- Printables
- Category
- Other Toys & Games
- License
- Creative Commons — Public Domain
A family member ashed about an endless marble run toy she'd see on Tiktok and I decided to try and generate one using OpenSCAD based on this way to build a 3D knot from slices.
The STL files are generated for 16mm marbles or ball bearing balls and should be printed in PLA+ as pushing the balls in requires a bit of force.
If you decide to run the code yourself, note:
A glass marble is inaccurate by ca. 0.5 mm, measure in multiple axis and take the highest value
Generating the final STL may take more than 10 minutes depending on hardware
The generated STL may need to be cleaned up, I've run the uploaded files through meshlab