WANTED,,, MACH3 CNC INSTRUCTOR IN THE CHICAGO LAND AREA TO TEACH MACH 3 CNC ON MY DESK TOP MACHINES. WILL PAY REASONABLE HOURLY RATE.
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I found that the jaws over the years may flatten a bit or wear on the edge. I check them with a dial indicator and true them up with a diamond grinder bit in a high speed grinder attached to my tool holder. Don't forget to lock the chuck from opening while grinding.. Hope this helps!!