Freddie; Polycarbonate is a thermoplastic characterized by a high softening temperature and high impact strength. That means it takes a lot of heat to bend or melt it, and a lot of force to break it. When you add into this the lamination layers of flexable scrim, it holds it together should the plastic itself be broken. I have never turned this, but given the propertys of Polycarbonate I don't think you would have any problems with it. I would, however,wear a full face shield or safety glasses the first time I tried it. My question would be, why do you want to turn clear plastic with a tube in it? I would make a kitless pen out of it to show off the internal parts and your skills as a craftsman. The second idea I would try, is to glue snakeskin or some other material to the tubes, and slip them in the clear plastic. Drill the holes accordingly. Just my thoughts. Jim S
