Hi. I set start gcode in my slicer
;Start GCode begin
G28 ; home all axes
G90 ;absolute positioning
G1 X-10 Y-10 F3000
G1 Z1 F1800
G92 E0
G1 E50 F200
G92 E0
;Start GCode end
and on print snap skipping g1 e50 f200 , it does not squeeze out the plastic before printing.