As you all may remember, when I was selling my cast Master FTO, I said I was neither going to build others nor to put it on Shapeways. I did this to highlight its uniqueness and increase the value of the item. And I was really going to keep this promise for the buyer. But Konrad (the buyer) said to me afterwards that he would really appreciate if I made a playable good-turning 3D-printed MFTO (it wasn't a secret that the cast one was not easy to turn) and put the design on Shapeways. He convinced me that I should do this job so that he and others could have the possibility to play with this puzzle.
Well if the buyer does not have any objections, others should not do either.
So I considered the flaws in my previous design and made this full 3D-printed puzzle. It is much more accurate, stable and a little smaller (now it has the same size as a commercially available FTO).