I have a large (400x400mm) glass bed on my printer which is not very flat! At the moment I use a mesh pattern that is 3 points x 3 points for G29 so I get 9 reference points. I tried changing this to 6 by 6 points in my config h file but when I do an ABL all 36 points are condensed into a small area about 120mm square. Not good! Anyone know how to resolve this?
Thanks
Les
