MMU3 Tool Change Gcode problems
I am trying to get the printer to extrude in the air after a material change in order to eliminate the purge tower. However, it does exactly what I say but only before the material change. I need precisely the opposite of what it's doing now.
What should I change in the "tool change gcode" (current script below)?:
; Raise the Z-axis to avoid collision and move to a safe position for purging
G91 ; Relative positioning
G1 Z20 F300 ; Raise Z-axis by 20mm
G90 ; Absolute positioning
G1 X10 Y10 F1500 ; Move to a safe position above the bed
; Extrude the newly loaded filament to purge
M221 S200 ; Set flow to 200%
G1 E30 F450 ; Extrude 30mm of filament
M221 S100 ; Reset flow to 100%
; Move to the side before lowering the nozzle
G1 X30 ; Shift to the right by 20mm
; Lower the nozzle back down
G91 ; Relative positioning
G1 Z-20 F300 ; Lower by 20mm to return to the original height
G90 ; Absolute positioning
; Resume printing