Welcome to the forum.
Moved. Thanks, James!I would post that question in the CNC section of the forum.
If you want get square corners in Mach3,I have switched over to Mach3 from Win CNC from my old machine. I have Visualmill 5 that I used with my old machine. I found a post processer for Mach3 on MecSoft website and tried to use it with my new machine and cut a square to check for accuracy and instead of getting square corners it made a radius and also the size was too big by the size of the tool.
I tried to get Metsoft to help me with the problem, but they wanted me to buy new software.
In the tool path window on Mach3 it shows the radius in the display. I didn't go any farther than that.
I think it may be something wrong with the post processer.