Waterline issues

[wayne4352]

Is there any setting in Mastercam X9 that could all of the sudden cause my waterline tool paths to start cutting under size like there is some kind of 3D cutter comp turned on?  For example I had 2 round parts that needed a radius  on the top edge. One was a .007 radius and one was a .012 radius. They both came out 2/3 the size they were supposed to. Both are being cut in VMCs. I even tried re cutting one in our Mikron instead of the Roeders to see if it was a machine issue and it came out the same. I am cutting them both with a 1mm ball end mill and using a waterline like I said earlier. The only thing that has changed since this started is that there was an issue with my profile not being able to open Mastercam on my PC so the IT guy created a new profile for me on the computer and reinstalled Mastercam. Thats what makes me think there  might be a software issue. 2D toolpaths work fine and I looked at the waterline program and there does not appear to be any normal comp codes being posted with the code. 

[Colin Gilchrist]

Is it possible that you've got a .032 diameter (inch tool), instead of a 1mm? The difference is about .008 (inches). Hard to see with the naked eye...

I have not noticed any "extra stock" being left by any surface paths. Have you verified the "stock to leave" is set to 0.?

[gcode]

Make sure the comp is set to tip and not center 

A couple of x9 versions installed with default center comp which can bite you pretty good