Hey, this is the Master Quartet My friend and I made and printed from Shapeways. I neglected to add tolerances, so I touched up the internals with 400 grit sand-paper. The center-caps stick out because I had to redo the cores from a template that didn't have the height of the cap subtracted from the height of the piece. I stickered it with cubesmith stickers. I will probably even sticker the white side with white to keep the plastic from getting dirty. Next time, I will dye the pieces or order them in black. I designed it on my own, but later found out someone has already made one. Luckily, the way the internal pieces interlock and the proportions of the puzzle are different. I have solved it and it is really easy. The last step solves simultaneously much like a Dino Cube.