"Using Sun and Zheng’s software, essentially any object no matter the complexity of shape or geometry can be turned into a unique Rubik’s Cube-inspired twisty puzzle. 3D models as varied as realistic bunny rabbits to action figures to giant chess pieces will work, and any part of the model that prevents complete movement is easily adjusted. But the software won’t just be useful for oddly shaped models, as more traditional twisty puzzle shapes can also be imported and turned into puzzles. These basic shapes can be made with multiple remarkably complex rotational axes, including oddly shaped blocks, varying geometric shapes and even curved pieces that run along curves axes."
https://3dprint.com/76320/3d-printable-twisty-puzzles/
https://3dprint.com/76320/3d-printable-twisty-puzzles/