Structural PVC connector

thingiverse

I've been searching for an alternative to formufit fittings that I use. A structural reinforcement is added since they are 3D printed. Note that the "hub" can be customized with a different number of elements. It's really designed for 4 or more connections. Note that PVC outer diameter (OD) is well controlled because pipe parts need to fit parts from different manufacturers. Our 3D printers are not quite as precise. Inscribed polygons are used to provide some flexibility to match the OD of the pipe. Adjust the tolerance value as needed to get a friction fit. I find 0.25 mm works for me! Remixing might include making supports in triangles to minimize material, removing the central port, or placing guide holes for drilling.