yes, actually! or at least I think.
just to make things clearer, I wasn't drawing a rectangle so it couldn't really go back to where it started but I was doing surfacing, so it was a back-forth traversal along the x-axis and steping a small amount on along the y-axis on each pass. (like a square wave with X axis being amplitude and Y axis being frequency)
I thought it didn't but now looking at the workpiece you can see where it lifted Z to (what it thought was) safe height at the end of X and Y (top left corner) and traversed back to the proper 0,0 (bottom left corner).
The "safe Z" wasn't actually safe at all but was around -1.5mm so it left a pretty little trail going back home.
Now, looking at it some more, the new X would've been 0 but Y was shifted to -4 (or thereabouts) so the home position would've been slightly lower then the original home but X would've been the same.
Would a crummy photo make things easier to understand? |