I printed the threaded peices to verify that it does indeed work. I haven't printed the whole piece yet. It is currently printing so i will post results tomorrow. I would suggest printing in abs if you plan to leave it outside. If no pla should work just fine. UPDATE 6/20/2016 The t connector does work. I did have to modify the thread on the bottom connector. There was not enough to have the rubber gasket. extended it from 3mm to 6mm. Another discovery is the sides where the arms go need to be tapered to allow the compression nuts to fit in. I used a reaming tool to taper the edges. Tinkercad link https://tinkercad.com/things/6N9nzUtcXfT Youtube video https://youtu.be/drGDiPSrDcE