Thanks for the info guys. My question here deals with 25th Kokuras, some show an attempt at removing the chatter, with varying degrees of success, while others are full blown chatter, just wondering if serial range has anything to do with it.
I would think that there are just too many variables to pinpoint chatter within a serial # range. I'm sure they weren't all cut on the same machine. Also, take into account wear and tear on a particular machine which would make fit and tolerance different, bit sharpness, user error (i.e. speed, and position of the cutter), different supervisor's and their individual opinions on what was acceptable methods.