C-3PO arm - large printer

This is an arm model I made mostly from picture analysis, but based somewhat on Starbuck Cylon parts and Gordon Tarpley's YouTube vids. The forearm is all one piece and the bicep is two. This was done to get a flat surface from which to start. The two pieces key together for alignment. This is intended for a large format printer like the CR-10 and I'm posting another version that might be more appropriate on smaller printers. I used 35% infill but it honestly probably doesn't matter too muc