Questions? When clamping the 2nd op of all the parts that have a 1.950 diameter, are you using soft jaws having the 1.950 diameter machined into the jaws? If so you may want to verify if your G54 zero position is off. Indicate the diameter of the part after moving to G54 G00 X0 Y0. If the indicator is zeroed out, then you may have some mechanical issues with your lead screws. Check out the topic 2nd Op Techniques for Mill Building Blocks
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