Multicam Gantry Squaring

[Boogieis]

Hi I’m having an issue squaring the gantry in my router xa and xb are leaving me not being able to cut a true 90degree corner.
Over a 1.2m distance I have a 3mm discrepancy.
Is there anyway to adjust this with software or an the machine.
The machine Is a 3x2m router from 1997 running the m23 v4 board
Everything Like homing sensors are bolted without opportunity to adjust adjustment anything physically.

Please can someone point me in the right direction I know it’s an old machine so support is limited.

Thank you

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[NSchlee]

This may help, from approx. that vintage. First is factory method, second is not.

[Boogieis]

Thank you for that information i spent hours on it squaring it exactly like the 2nd method.
In the end i did what i should have done in the first place and drew a 3-4-5 triangle. Turns out my relic is infact perfectly square and the brand new spoil board i was lining it up to was out.

Thank you for your advice another lesson learnt

[NSchlee]

First rule of CNC cutting, NEVER rely on any sheet stock to be square. :-)