Solids of constant width: Rounded Reuleaux tetrahedron / Meissner tetrahedra
thingiverse
The Meissner tetrahedra, also known as lathe-version, is showcased in the given videos. The printable design consists of two parts for easier printing. For added fun, you can use different colors to create a "random" appearance by combining the colored pieces using the connector and glue. Additionally, an OpenSCAD script is provided to generate the halves. If you're unable to print it yourself, consider requesting someone else to print and test it, reporting back on its functionality. For more information, visit http://en.wikipedia.org/wiki/Reuleaux_tetrahedron or watch the videos at http://www.youtube.com/watch?v=270qEZKXAfQ and http://www.youtube.com/watch?v=cUCSSJwO3GU#t=108.
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