An 'exploded or sectional view' may also help others understand the concept, not sure how that could be done easily though..
Also of interest, I found a company in the states that makes mini alternators for unmanned vehicle subsystems, incl coreless designs, I suspect they are hugely expensive, but worth a look imho. http://www.sullivanuav.com/products/al_coreless.html
Ben.
just curious, is the inner pole piece an off cut of the outer pole piece?
i also want to compliment you on the design of the end caps of your mill . and the way you can secure both ends with that single threaded rod. that is nice design at work ![ Parent ]