Computer Numeric Control (CNC) is not possible without the machine knowing the location of reference surfaces on the stock. Here is a probe I use in my CNC mill, along with one of my Electronic Edge Finders. I adjusted the Total Indicated Runout to be less than +/- 0.0005 inches. There was no value in going tighter due to spindle runout.
If you are interested, please, click here.
Your comments are welcome. All of us are smarter than any one of us.
Thanks,
Rick
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