Quote Originally Posted by DarkAlchemist View Post
This is what always confuses me because I see my origin is the front left corner BUT g1 X0 Y0 doesn't put me in that corner.
Where ever G1 X0 Y0 moves the nozzle... That is the Origin. Mine is flipped. I should probably put it back at the front left now that the Least Squares Fit can handle negative coordinates. (My probe is on the left front of the nozzle... And in the early Auto Bed Leveling code, there was a problem with negative coordinates so I rotated the origin to the back right to fix that issue.)

The problem with having it anywhere but the front left is it gets real confusing when you are trying to use PronterFace to move the nozzle around. It is a lot easier when you click on the right spot on the PronterFace target and the nozzle goes the direction you expect.