Rotatable Sphericon

thingiverse

This is a sphericon, a solid with only one surface, reminiscent of a three-dimensional Mobius Strip. What's fascinating about sphericons is that they roll in a zig-zag pattern. A compelling YouTube video can be found at https://www.youtube.com/watch?v=wb29-ULRBaE, which delves into the intricacies of sphericons. The one I created here is a modified version that interlocks seamlessly, allowing it to be printed with minimal support - only the male end requires any assistance - and can also be converted back into a bicone to showcase its construction. It's truly an captivating desk toy.