our shear tends to push the metal sheet stock back even though it is square.
When we do a matrix of plates,we want a down cut on all 4 sides, so we put cut lines on all sides. We cut down between 2 cut lines to get a more managable size.
We then offset the cutline toward the ruler slightly off the shear to compesate. All by eye and feel.
Sometimes we clamp a square to length, not allowing the matal to be pushe back.
Bruce |