And the same for reverse, so on tool change or end of print, lover the bed a bit and then move extruder to dock? End is fine as I can say :
M83 ; relative extruder movement G1 E-2 F3600 ; retract 2mm G91 ; relative axis movement G1 Z3 F500 ; up 3mm G90 ; absolute axis movement G1 X30 Y-30 F6000 ; move the X carriage in front of dock G1 X0 F6000 ; Move the X carriage into dock
Just need to figure out how to do this on start or in tpostx.g so that I assume I would
; lift the head G91 ; relative positioning G1 Z5 G90 ; absolute positioning
But have that G90 occur AFTER the move to first G1 in the gcode file (or something, obviously this needs to be absolute too in order to start).
Apologies if this has been covered before, after hours searching I gave up.