How to mill a through hole PCB | Inventables
9. A well-tuned and square CNC mill. The fine details of a PCB need a very well-tuned and calibrated CNC mill to produce the fine isolation traces needed for PCB milling. Calibration is best done with a dial indicator for each axis to insure proper steps per unit settings. We will also need a set of probe wires attached to the mill controller.
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