This is a video of my custom built Pentultimate puzzle.
As far as I am aware, this is the first working Pentultimate ever built.
Since this is a prototype, there are a few problems with movement. The puzzle is sensitive to alignment. As you will see in the video, I turn it over in my hands before each turn to make sure the pieces are lined up properly. Once lined up, rotational movement is fair.
For more information on this build, visit my website: