Any time I try and do a circle or arc I get an error (radius to end of arc differs from radius to startline 9) I am using autocad 07 then lazycam. I am lost and dont know what I am doing wrong or know were to look. I have also tried sheetcam and get and error (unknown g code used line11) line 11 is n0110 g23. I am very new to this just built my table and have cut out same items that i downloaded from the net in dxf format then used lazycam to make the g code that all worked.
Radius to end of arc is usually caused by the wrong IJ mode. Change it in General Config.
Check on the SheetCAM forum for the other issue. Not sure of Mach supports G23, but I know a lot of people use SheetCAM and Mach3 with plasma machines.
Gerry
Mach3 2010 Screenset
http://home.comcast.net/~cncwoodworker/2010.html
(Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)