This tri-clamp is useful for joining flanged pipe such as is used in chemical or food processing. The model is based on the geometry of a standard clamp from Mcmaster-Carr but adapted to make more suitable for 3D printing. It has been tested for assembly (works fine) but has not been used to join pressurised pipes.
still to do: test! refine threads for easier printing
If used for light duty work, only the clamp screw and wingnut will required printing at 100% infill
There is some clearance designed in on the threads. If your printer isn't well set up, you may need to clean up the threads a little with a knife or needle file to get them to go together smoothly