Paul,
I used a shoulder bolt I made turned to fit the pivot hole, you want no play in the pivot. I think it was about 0.050 to 0.100
in the Z axis and about 0.020 to 0.030 in the X or Y axis depending on how you look at it. A few safety points, make sure the setup is rigid, have plenty of leverage, have stops in the axis of rotation, go slow on the feeds, make sure that when you are making a cut if you let go the cutter will not grab and throw the piece at you. I made two of these stops and did 4 ends. This did take me awhile to do, go slow. Randy
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