Well I had a close call this morning, I was running a job and the Shapeoko ran the first toolpath using the 201 bit with no issues then I was asked to put the 301 bit which I did and the spindle moved towards the BitSetter and descended on the BitSetter to probe the length but I noticed an issue, the endmill was not aligned with the BitSetter button, it was further out in the Y direction. I was happy that I spotted it and that the pause works during the process, the spindle retracted and I saved the bit and the BitSetter from a sharp poke.
Why would the Shapeoko lose/gained Y steps all of a sudden? I did not crash the spindle, everything ran fine for the first toolpath. It is a bit worrisome and I will have to pay very close attention when I change bits. Anyone else experienced something similar?