Ordered this and the 10x10 expecting the same quality as the 9x9 and 11x11. These are nowhere near as good. The outer layers are fine, but the inner layers are absolute garbage, almost to the point of unusable. Feels/sounds like there is something inside the cube or that the screws are rubbing on the interior of the pieces. I've lubed it, taken the whole thing apart and reassemble, loosened, tightened, anything else I could think of and nothing, still just a horribly turning waste of money. Guess I'll reluctantly put a design into it and set it on the shelf to never touch again. Really sad, I was looking forward to this puzzle.