Quote Originally Posted by Jim Becker View Post
Excellent point...

That method assumes the disk is flat and parallel. It is more accurate to use a flat bar and clock it around the arbor several times. That eliminates concerns about flatness and parallelism. Of course the retightening of the arbor nut without a torque wrench would defeat the advantages. To each his own and I am sure decently made flat disk is plenty accurate for wood work.
Bill