More designs for building with 2020 extrusion

A pivot/hinge for 2020 aluminum extrusion. The hinge is made up of three printed parts, none of which should need any supports, brims, etc. I designed it for introducing odd angles into 2020 extrusion frames. I've now made a few different variants on this pivot, this one is intended for when one frame member needs to come in at an angle, midspan of another member.

I printed mine from PETG on a 0.6mm nozzle and it takes about 2 hours for the set.