I have run into this in the past. Near as I could tell (best guess, really), it was perhaps hitting a 'sticky' spot where the tip gets a little fling forward after a bit of drag, and either the software or controller becomes confused about the vector is for that point. We had a part that would fairly consistently do this in the same spot off of the milling machine, and look like it had a huge wart on the surface (which it most certainly did not), but after a few rounds of polishing, it would smooth itself out.
As you've seen here though, that 'Show Compensation' option can be rather illuminating when you're trying to figure out why the scanned contour doesn't comport with reality - if that bump was really there, it would be there in the uncompensated points as well...
I have run into this in the past. Near as I could tell (best guess, really), it was perhaps hitting a 'sticky' spot where the tip gets a little fling forward after a bit of drag, and either the software or controller becomes confused about the vector is for that point. We had a part that would fairly consistently do this in the same spot off of the milling machine, and look like it had a huge wart on the surface (which it most certainly did not), but after a few rounds of polishing, it would smooth itself out.
As you've seen here though, that 'Show Compensation' option can be rather illuminating when you're trying to figure out why the scanned contour doesn't comport with reality - if that bump was really there, it would be there in the uncompensated points as well...
