Thanks for the reply .... but, I did as you recommended and the "Adjust arc feed" is turned off. I'm going to see if there is a way to adjust the speed in the FLASHCUT program. Any more assitance would be appreciated. Doug J.

I'm new to MasterCAM and currently using X4. I am cutting HPDE plastic panels (2D) and when the program is run on the CNC machine the cutting speed between an arc corner and straight cut is night and day. The arc is slowing right down and then the straight cut is running at light speed in a contour/outline cut toolpath using a 1/4" straight upcut bit. I am also using Flashcut to run the CNC machine. Is there a way to change the arc feedrate / cut speed in MasterCAM ?? Any help would be appreciated. Thanks, Doug J.