After I noticed it was way off I stopped the run. I had machine return to zero and it was off by about 4 inches. (Irritated and done for the day) The following day I homed the machine and sent it to zero. Surprisingly it even got rid of my G28 coordinates which had been set using G28.1. That was surprising. Anyway it did indeed lose steps. Im not sure how it did. I ran the file again above the surface of the piece (leaving it on the board). I noticed that during the run the Y axis became uneven Y1 to Y2. This caused the machine to freak out for a moment and I stopped the run. I got them back even and did nothing further.
My question which I am going to continue to look up is this;
How can my machine lose steps on run 2 but not on run 1?
I ran a test carve for the file to ensure its visibility, it ran both files (clear out and detail run with separate bit) perfectly. (this was done on MDF.
I then put the workpiece on the table, home machine, set new zeros. ran file and it lost roughly 100m in steps.
I have flattened the piece again and have 1 more attempt before I am out $500 worth of work and have to start over on a slab of mine and then still be done by Tomorrow evening.
I am nervous as heck. Any thoughts?