cura 4.12 start gcode.

G21 ; millimeter units
G90 ; absolute coordinates
M82 ; E absolute
G28 ; home axis
; Lower nozzle and move to start position
G1 Z150
G1 X-130 Y0 Z0.4 F3000
G92 E0
; Extrude about 40 mm by printing a 90 degree arc
G3 X0 Y-120 I120 Z0.3 E40 F2700
; Retract and move nozzle up
G92 E0
G1 E-1.5 F1800
G0 Z0.5
G1 E0 F300
M83 ;MAKE SURE TO SET EXTRUSION IN CURA RELATIVE.