I just set up and got running a smooth stepper.   However I have a problem I think is unrelated to the smooth stepper.

I have a fresh download of Mach3 on a Dell laptop.    I also have a copy of Mach3 on another computer that has been running since 2009.    I have tried to duplicate all the settings from the older download to the new download.

My milling machine will JOG in all three axis's just fine.   The calibrations seem right.   But, load a program into Mach3 and all it does is show 4 concentric
circles in the toolpath window even though the program is 4 tiny holes that are inline.   Run the program and Mach3 Machines a huge circle.   I loaded another program without any circles yet Mach3 display the same huge circles.

The only thing different between the old computer and the newer (2005) computer is the CPU speed.

I have setup Mach3 several times and never ran into this.      Seems like Mach3 had setup program that told me a bunch of things to do but not this time.

I don't think this problem is related to the smooth stepper.
Jim

Hi Jim,

It sounds like you may have the crop circles issue. If so then this relates to the way in which your arcs have been created in your CAD/CAM software.
Within Mach3, Config / General Config - change the IJ Mode - that shouldl resolve the current problem.
In the long term you should modify the post processor from your CAD/CAM software to include the G90.1 (absolute) or G91.1 (incremental) command as appropriate.

Tweakie.

Hey,,,That did it.    Took a while to find it.   I missed that one.  Now both Mach3 loads are the same.

thanks.