What I have used as a rule of thumb is to keep the difference below .2, .6 is a huge difference in my mind and is making your printer work much harder to compensate for the large difference.
either have something like KAMP handle your meshing adaptively before every print (takes more time every print, will work even with different bed);
or by having a fixed bed without any adjustable screws/etc., creating a proper bed_mesh (eg bicubic with an amount of probe_count on the higher side) and loading it in your print_start before every print. (will always work aslong as the bed/setup stays the same. Gotta remesh when you change beds)
What I have used as a rule of thumb is to keep the difference below .2, .6 is a huge difference in my mind and is making your printer work much harder to compensate for the large difference.
Klipper with proper mesh and a reliable Probe on a fixed bed can handle 1mm range without any issues at all.
how would I do that?
either have something like KAMP handle your meshing adaptively before every print (takes more time every print, will work even with different bed);
or by having a fixed bed without any adjustable screws/etc., creating a proper bed_mesh (eg bicubic with an amount of probe_count on the higher side) and loading it in your print_start before every print. (will always work aslong as the bed/setup stays the same. Gotta remesh when you change beds)