I am a controls engineer working with offshore drill ships. I have background in software development and electrical engineering. I also have a background in CNC (its how I paid for college), metals and plastics. If you have questions on materials, by all means ask.
I am planning to build the project over the next month of 2. I am also interested in scaling up this project to NEMA 34 motors, because i like the design. I am also looking at making some of the wear parts (gears) out of stronger materials. I will share any molds I make with pouring instructions.