I've been using 3d printers since before it was "cool" I operate a Additive manufacturing Lab for P&G . The 3d systems ipro 8000 and SLS 2500 plus are my workhorses. Hit me up if you find a design that isn't watertight. I'm pretty good at repairing STL's send it my way and I"ll try to remix a watertight version for printing.
I Am A…Professional
Tools I Use…
Printers: 3d systems ipro 8000; SLS 2500 Plus, Makerbot 2x, seemecnc Orion Delta.