I do it like so, 24" rings on a 34" aluminum plate in the gap bolted to a faceplate, 304 laser cut SS 1/2" thick. Four parts took over 30 hours including set up. Not including drilling and tapping the plate and milling the clamps.
Face halfway, move clamps to the other side and finish face, same with the diameters, clamps on outside and turn ID and face, move clamps to OD then turn and face, flip and repeat, this requires much patience but I am paid by the hour.Now thats a face plate.
Thanks for the idea, hmm, thinking.
How did you machine the faces or was it only inside and outside dia that mattered?