M999 ; clear errors G21 ; set units to millimeters M82 ; use absolute distances for extrusion G92 X0 Y0 Z0 E0 ; Set cords to zero M109 S230 ; set extruder nozzle to 230C and wait G1 E45 F45 ; move extruder 1 200mm G1 E0 F150 ; retract for easier removal M84 ; idle motors ? M18 ; turn off motors M104 S0 ; shut off extruder temp