Hi, All

If your using LasyCam and getting, STATUS: Radius to end of arc differs from radius to start on Line number # when running Mach3.

It generally happen's after running program in INC Mode, then loading Gcode with G02, G03 in it..

You need's to change your Post Pre and Post Amble's, as it is now it generate's a Pre G90 G80 G40, Post G40 G80 M30 in one line.

Mach3 doesn't read and process multi-Gcode command's on one line. may at some point.

Edit it to look like this.

Pre.
G90
G80
G40

Post.
G40
G80
G90 ( I added this may not be needed though)
M30

It's been driving me crazy.

Hope this Helps Chip

Hello I am getting this all the time now. How do you get the Pre Amble to show up? I got the posting options but without the Pre Amble and Post Amble on it. Thanks

That's from a very old post (2006), I think it's been gone for quit a while.
You can put the G91.1 (and others) in your Initialization String on the Gen Config screen.