Quote Originally Posted by HiltonSteve View Post
End of the day if your building a machine then you decide which way round you want your X and Y, does it really matter??

All the CNC stuff I have worked on always had the longest travel movement on the bed as the X. So if your gantry was wider than your machine is long (don't really know why you would do this!) then maybe I would be calling my gantry X then you would be right!
Drew a part up the other day and sorted a long thin bit of spare material out it would just fit on and put it on the router with a lump sticking out.

Loaded the program and realised I had drawn it 90 degrees to how the material lay so X needed to be Y and visa versa.

Went into Mach and swapped the pins over in ports and pins, cut the job and then swapped it back.