Sadly, I need to redesign. At this scale it is very difficult to get the tolerance needed to get this design to work. Also I need to design in adjustment for lining things up. The crank mechanism, whilst beautiful and good in theory is not ideal in practice, so I'll use a much simpler Scotch Yoke system to convert the reciprocal motion to rotary motion.

 https://image.nostr.build/8139d080283059ff31eb253ca51cec4698bcf597c69a7acdbf24d1e022250d64.jpg 

 https://www.youtube.com/watch?v=QGKGoXD8P5A

I have great respect for practicians in the arts. When I first saw your project, this video came to mind.  

 Thanks for posting. Hallbach arrays are very interesting and his "field cancellation" is exactly the principle I am using. It would have been more interesting if he had gone into more detail and examined some of the other aspects of field cancellation. 

 Neutralization does not sound interesting, but put it in terms of Webers per second! Possibilities arise, or maybe potentials.