Doing it wrong all this time!

[Neale]

I agree with you, Charlie - normally Y would go in the opposite direction. You could still home to the same position, but configure Mach3 (if that's what you are using) to set Y to its maximum value rather than zero.

What you have would be called a left-handed coordinate system, but most software assumes a right-handed system. Very easy to change in Mach3, though, so well worth doing so it all agrees with Fusion 360 and saves a lot of confusion downstream!

I get the impression that the US tend to have X on the gantry axis and Y along the bed, although my own machine is like yours. People seem to have strong opinions on this, but as long as you know which is which and setup work accordingly, it doesn't really matter. My own problem is that with my mk1 router I stood next to the long axis (X) but mk2 has raised rails along the bed so I tend to stand at one end as its easier to load/unload. I then forget that X goes away and Y across from where I'm standing. Thank heaven for e-stop switches...