software bed skew/adjust

[djmickyg]

I don't have the required adjustment in my old home made router to adjust the bed so it's parallel to the axis. I have a ~2mm difference from one corner to the other diagonal corner (500x500mm)
Is there a way to apply a rotation to the axis to compensate for this in MACH3?
It doesn't have to be super actuate, I only use it for odd timber jobs

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[ger21]

You can use a Formula so that as the machine moves along one axis, the other axis moves a small amount to compensate.

Look at Formulas under Function Cfg.

Something like f(y) = y + (x*.005)

When you are at X= 0, the Y value will be unchanged. As you move to X=500, the Y will increase 2.5mm (500*.005).

Formulas may not work with all motion controllers, and they can be buggy in some situations. But they may work for what you need.

[djmickyg]

is there someone in the mach3 settings i can apply the skew factor or is this something I would have to do to the processed gcode? i could easily create a python script to do this, but I hope i can do it directly inside mach3

[ger21]

I just posted how to do it.