GCC Explorer "not cutting square"

[matBrook]

Hi Everyone

any help would be appreciated, I have just purchased a used GCC Explorer II. Its all setup and cutting but I know the alignment of the mirrors is out quite a lot as it has varying laser strength across the table.

I am cutting out basic squares to test but they are not at 90 degree right angles they are about 3 to 5 degrees out from the drawing. So the squares are all slanted, I get the same thing with circles to a lesser visual degree.

I am wondering if the gantry is out of align, or can this just be caused by the mirror misalignment.

thanks Matt

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[OldEngraver]

Mirror alignment is very important to get 90 degree cuts. GCC Machines have 4 mirrors so the alignment is very critical.

[OldEngraver]

Also check that the table is level.