5/8-inch 90-degree plumbing elbow

This 90-degree elbow is designed for low pressure drop fluid flows.  It accepts 5/8-inch outside diameter tubing that slides in with a press fit.  Glue is needed to on the face seal to prevent leaking, so carefully cover the seal with compatible glue and push the tubes all the way in tightly and let dry.  Depending on the tubing tolerances the fit may be looser or tighter from what I used, but after many months, zero leaks.  Also depending on your printer you may want to print it with the vertical scale slightly bigger around 2% to counteract the sagging of the top of the pipe to get a more circular hole - i.e.  xscale 100, y scale 100, z scale 102.  Alternatively, one can print it on 45-degree angle and the sagging is reduced on both sides.