Finally got all the 3D printed parts done, Stepper package arrived, and bought the complete kit. I chose to assemble the controller first. Here's a few photos. I have a DIY CNC router to help me. Worked great making cutouts in the cabinet. I chose to use panel mounted USB jacks. Makes a clean cabinet. Wiring is next.
From a pile of parts to a completed 7 Axis AR4 Robot. Programming time now! Lots to learn.