Nope, no sign of it in Verify. In reality tho, there was a small line about .010 -.015" wide where it appears that the stock may have been pushing away making it seem thicker than it was. I restarted the program with a worn mill (for experimentation purposes) and slowed the feed to 10% (12IPM) and it strolled thru that area like it wasn't even there. I modified my program to slow the feed thru that portion and haven't had an issue on the remaining parts.

Nope, was a brand new 1/2" End mill

After further investigation, it would seem that the trouble lies with the path taken to the next cut. Light blue = cut Red = Transition to next cut @ rapid feed rate Green = Next cut.

Mazak Mazatrol 640M

It wasn't a fan. Especially since it was a Rapid move at around 300 IPM

...Is a cool toolpath until it sends the tool through a wall 3x the stepover.

Create a plane at desired angle from working plane. Create helix from new plane. Project helix to working plane.

I'll try that next time it happens. Thanks

What the heck does this even mean? This error pops up every now and then no matter which tool path. I can go back and copy a previously successful tool path, adjust the parameters to meet my current needs and it will process correctly. A hint might be nice.

Sounds like he'd be lucky to find his buttcheeks in the dark with either hand

In your Control Definition/ Tool, What are the settings? Try "Add To Tool" radio button and Length and Diameter settings should be "0"

You're welcome

Komet