If you intended to line the inside with felt and the outside with leather or faux leather, the perfect fit half-shells could be made fairly easy with a 3D printer. I have extremely durable materials that would no doubt be much stronger than most of the cases that I’ve seen. I do my 3D modeling on SolidWorks. A pipe would be tricky, but completely doable. This would be a great option IF you are more concerned about functionality. Obviously, there is only a fraction of art, love, sweat, time, etc. that would come with the case versus a hand made wooden case. That said, something tells me that they might just soak the balsa wood (or some paper composite material), and then form it around the pipe.
Sable- if Turkey is the answer, I wonder if you could just have your pipes modeled and 3D printed, then ship the box containing $2 of plastic to Turkey.