This is the end result. The MT 2 bushing in the work head has 0 run out. The ID or inner bearing surface of the live center housing indicates .0008,...
I finished grinding the cone. I indicated the shank to better than .0001. No needle movement at all.
Had to take about .005 off the cone to clean it...
OK, I get it. I don't believe my Acu Rite has that feature.
But alternating back and forth between the X & Y by even .005 to cut an arc can be quite...