M999 ; clear errors G21 ; set units to millimeters G90 ; use absolute coordinates M82 ; use absolute distances for extrusion G92 X0 Y0 Z0 E0 ; Set cords to zero G1 E100 F70 ; move extruder 1 100mm M104 S0 ; Turn off 1st extruder T1 ; change extruder T1 ; "AND AGAIN!!" M109 S230 ; set second extruder nozzle to 230C and wait G92 E0; set E value to 0 G1 E100 F70 ; move extruder 1 100mm M104 S0 ; Turn off 2nd extruder M104 S0 ; Turn it off again, just cause M84 ; disable steppers