G21 ;metric values
G90 ;absolute positioning
M82 ;set extruder to absolute mode
M107 ;start with the fan off
G28 X0 Y0 ;move X/Y to min endstops
M420 S1;
G28 Z0 ;move Z to min endstops
M420 S1;
G92 E0 ;zero the extruded length
;Priming nozzle
G1 X15 Y15 Z0.2 F{travel_speed}
G92 E0
G1 F200 E3
G1 X100 E6 F400
G92 E0
G1 Y20 F400
G1 X15 F400
G1 F1600
M117 Printing..0