I did a bunch of makerpipe projects 3-4 years ago. At the time they didn't have a lot of different connectors, so I designed and 3D printed them ( Makerpipe Collection by Simple3D | Printables.com ),

I had a new project and went back and was nicely surprised with all the new fixtures available!

I needed a gate hinge for the 1" EMT. So I designed and 3D printed one. I put the free model on Printables ( Makerpipe 1 inch EMT Pipe Clamping Gate Hinge by Simple3D | Download free STL model | Printables.com )