In July 2016 Calvin (HKnowStore) released factory made versions of Carl Hoff's Bubbloid 4x4x5 and 4x5x5 puzzles (available here). Shortly after receiving one of each I transformed the 4x4x5 into a barrel (or cylinder) shape. All work was done by hand including the stickers. The puzzle works fine though it's a little stiff and sometimes catches. This matches the quality of the original Bubbloid it was made from. Puzzles with very sharp angles typically have movement problems since they can obviously catch more easily than a Rubik's Cube for example.