And he should no better lol

[TomG]

(10-16-2014, 07:39 AM)Mayhem Wrote:

(10-16-2014, 12:28 AM)TomG Wrote: ...or he could have conventional milled from the center of the part. That would have tightened the part on the threads.

Tom

I'm not sure I get this part...

It looks like there is a rim around the edge of the part. If you start inside the rim and move the cutter out, the rotation of the cutter will tend to rotate the part clockwise, tightening it on the arbor.

Tom