It's looking good.
Thanks for the info on the magnets. The magnets are mounted on steel plates, right? It must be really tricky placing the magnets onto the plates so that they align exactly as you want them to. Did you use a NSNSNS placement? Are the angle irons used for supportive containment of the magnets, or for shielding purposes, or both? And what material did you use for the hexagonal end pieces this time?
It will be fun to see this in action. Keep up the good work.
Best regards, Rickoff