First few projects with the long mill went great. A few nights ago I was cutting a more complex (multiple bit change) project and something went wrong after the last changed. It started running fine, but then cut further in the X-axis (positive direction) than it should (ruining the project in the process).
I chalked this up as my reseting the work origin incorrectly during the tool change.
Today I started cutting another project (a sign). First toolpath ran fine (surfacing bit). Second tool path was a pocket with a 1/8th end mill. This was going to take three passes to get to depth. First pass seems to have finished fine. Second pass was in progress when I walked into the garage. I was zooming into the visualizer and then heard the sound of the router change as if it was cutting harder all of a sudden. I look up and sure enough it’s cutting out at the end of the board when UGS thinks it’s in the middle. Looks like it was about a 6 inch offset in the positive X direction. After my initial frustration I hit return to 0 and sure enough it wasn’t at the corner of the board where it was before.
Jogging and rapids seem fine - and it was cutting fine for about an hour before this occured.
What would be causing the X axis to run too far forward in the middle of a cut?
Using Carbide Create for CAM and UGS for interface.