Yes, Tom. Just ground the outer shell in the SS sphere and all is taken care of. No outer grid is needed.
Outer grid supports are outside of the outer grid in a plastic system and are not electrostatically seen by the interior of that outer grid, so there is no need to insulate them.
Again, all the best on your continuing efforts. Let me know when the demo unit is fired up and I will ammend the fusioneers list to put you in the demo operators group. Gonna' share a photo or two via the Images dejour?
Richard Hull
Created on Tuesday, May 15, 2001 1:26 PM EDT by Richard Hull