I have a problem with my router losing its zero position, either x or y, during a job. The job seems to pause then move off somewhere else. I stop the job, raise the z axis then select return to zero and it returns to a point where either the x or y axis is not at the original zero. This can happen once or many times during a job or not at all. Can someone suggest what could be causing this behaviour?
I am using Mach3 on a laptop running Windows 10 with a USB controller. All the things they say not to do but I've created bigger jobs than my test one and I don't have the problem.
Until this morning it was always the y axis that was off but this morning it was the x axis each time.
Attached is the test file, created in Fusion 360, I've been using this morning and it crashed twice during one attempt losing the original x zero and each time it was off by a different distance.