I tend to keep having my cuts off by about .030". If doing on outside contour its big and pockets are too small. Not sure if this is a stepper motor calibration issue or something else. Any ideas?
Most likely it’s an inaccurate measuring of the diameter of the endmill / runout.
Use the measured cutting diameter
I think it ended up being a bent bit. After putting in a new one, the problem has gone away.