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I missed the first post. Being very familiar with Boeing's carbide and PCD round tools, I may have a solution.

New annulars are typically made on higher HP 5-7 axis CNC tool and cutter grinders. The material is of the M series and ground best with CBN. The geometry can be made with A1 and V1 wheels....

What kind of chucking system do you use? There's an autochuck that uses Swiss collets that hold close to .0002 repeatedly. They typically are used on CNC round tool grinders. The collets are popped...