I have built a gantry machine which does my PCB routing.
I have opted for tooling posts mid way along X axis at full Y axis span.( two pins as far apart as possible).
I will then drill tooling holes in the PCB blank laminate and proceed to drill and mill.
Tooling pins and associated data processing software allow me to operate the equipment in a kind of WYSIWYG mode.
Except I have a slight misalignment between the two layers.It seems X and Y axis of the machine are not perpendicluar to each other.
I have tried packing Y axis and have minimised the the misalignment however it is still there.
I was wondering if there were any tutorials or blogs pertaining to orthogonality issues.
Real live comments are also sought.