Is it possible to tram X/Y squareness with fixed feet?

[eaststreetcarry]

@Aiph5u

That’s hard. But in your drawing, you show a square that is rotated. Are you sure it isn’t a parallelogram?

No, I’m not sure about Y. I only swept a fixed reference across ~75mm (~3") in X and it gained ~1.5mm. I didn’t check Y yet.

@Aiph5u

At first I would measure the diagonals between the opposite feet (left front to right rear and vice versa). The diagonals have to be identical.

How is one suppose to measure this distance? And from what reference point?

@Aiph5u

If it’s made of wood, you can glue a cross-grain dowel into the holes and drill new holes into your frame.

It’s aluminum.