Reuleaux Tetrahedron Foot Roller
thingiverse
A Reuleaux Tetrahedron is a near-body of Constant Width. As such, it can roll with ease like a sphere but lacks the spherical shape altogether. I designed a Reuleaux Tetrahedron as a roller for my feet because its unique width distribution provides optimal support at pressure points in the feet. Additionally, I included an STL file of a Meissner Body that is a Reuleaux Triangle, effectively turning it into a true constant-width body.
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