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Z-height problem

Posted: Sun Sep 03, 2017 8:39 am
by munchit1
Hi all, again.

having trouble setting the height on the bed printing, basicaly the nozle keeps starting too high above the bed and will not lower no how..
the nozzle homes to a leval 0.25mm, the width of the paper...layer height 0.3mm with a 0.4mm nozzle (tried down to 0.2mm).
to my reconing lowering the global g code offset has for 12month lowered the nozle height (or taken it higher as set)..not today though. -6mm should have scared up the bed surely?

X,Y,Z and E are spot on (to within 0.04mm eather way).
tried a hot and cold bed.


in the G code section...

global G-code offsets....z axis, i've been to -6mm and plus 6mm no change (the nozzle homes to a leval 0.25mm, the width of the paper...)

started shifting the offset origin, the same results...neadda


any hints or insight please?