"machine_start_gcode":"M104 S140;start the nozzle preheat and don't wait\nG21;metric values\nG90;absolute positioning\nM82;set extruder to absolute mode\nM107 ;start with the fan off\nG28;home all\nM190 S[bed_temperature_initial_layer_single]; set wait for bed temp\nM109 S[nozzle_temperature_initial_layer] ; wait for extruder temp\nG1 Z15.0 F3600 ;move the platform down 15mm\nG92 E0;zero the extruded length\nG1 F200 E40;extrude 40mm of feed stock\nG92 E0;zero the extruded length again\nG1 F3600",
"machine_end_gcode":"M104 S0;extruder heater off\nM140 S0 ;heated bed heater off (if you have it)\nG91;relative positioning\nG1 E-4 F300;retract the filament a bit before lifting the nozzle, to release some of the pressure\nG1 Z+10 F3600 ;move Z up a bit\nG90;absolute positioning\nG1 X-10 F3000; get the head off the bed\nG1 F3000 Y400;kick the bed out\nM84;steppers off",