CoincidentalTwistis based on a newly-discovered geometry that I called "Cube Sphere", see also here. When working on the mechanism of Inka Cube I stumbled upon this geometry, where the distance of a layer N to the origin is proportional to sqrt(N). This geometry has the surprising property that all corners touch the surface of a sphere, for any number of layers that the geometry is extended to. At every point where cut-planes intersect, it is not two but three cut-planes that coincide there. Usually, twisty-puzzle designers try to avoid such coincidence, as pieces tend to jam as these points. For this puzzle, it is a feature. The mechanism has a 3x3x3 core, and the outer pieces hang to the edge and centers of that core. The "coincidence" geometry is maintained throughout the outer shell, eliminating the need for extra "shells" pieces inside.
This beautiful puzzle is printed in ABS material and comes fully assembled.
CoincidentalTwistis based on a newly-discovered geometry that I called "Cube Sphere", see also here. When working on the mechanism of Inka Cube I stumbled upon this geometry, where the distance of a layer N to the origin is proportional to sqrt(N). This geometry has the surprising property that all corners touch the surface of a sphere, for any number of layers that the geometry is extended to. At every point where cut-planes intersect, it is not two but three cut-planes that coincide there. Usually, twisty-puzzle designers try to avoid such coincidence, as pieces tend to jam as these points. For this puzzle, it is a feature. The mechanism has a 3x3x3 core, and the outer pieces hang to the edge and centers of that core. The "coincidence" geometry is maintained throughout the outer shell, eliminating the need for extra "shells" pieces inside.
This beautiful puzzle is printed in ABS material and comes fully assembled.
