xyz orientation issue

[marbles]

Thanks for eveyone’s thoughts.

I’ve used Aspire for the last few years and i’ve not changed any of the setting recently so its less likely to be a CAM and post processor issue. I even ran a piece of g-code written for my first machine and it inverted the cut path.

With this build I have copied some of the elements of my first build. The first build homed in the back left corner and ran forwards. It too had the x&y the wrong way round but i just got used to it and didn’t invert cut paths. This new machine has been built to home front left BUT with the intention of having the g-code also run from the back left corner like the first machine. Running a test bit of g-code shows me the machine is mirroring the file and reading another forum discussion leads me to think the machine is therefor running backwards. The keyboard buttons however work exactly the same as the first machine but it never inverted g-code like this machine so thats a tad confusing.

Maybe i’m just missing something really basic that i’ve overlooked in the Mach3 setup, Dir LowActive settings or something. Are there software setting I can change before I consider reversing the polarity of stepper windings?