Starting G-code with Purge

starting_g-code_script_with_purge.gcode

G90 ; set to absolute positioning - this line was added in case Cura doesn't include it by default
M82 ; set extruder to absolute mode - this line was added in case Cura doesn't include it by default (may not be needed)
G28 ; home all axes
; The lines below are to prep the nozzle before a print begins
G1 Z0.2 F1200 ; raise nozzle 0.2mm
G92 E0 ; reset extrusion distance
G1 Y1 ; move Y-Axis (bed) 1mm to prep for purge
G1 X100 E12 F600 ; move X-carriage 100mm while purging 12mm of filament
G92 E0 ; reset extrusion distance

Ending G-code with fan off after 6 minutes

ending_g-code_script.gcode

M104 S0 ; turn off hotend/extruder heater
M140 S0 ; turn off bed heater
G91 ; set to relative positioning
G1 E-2 F300 ; retract the filament a bit before lifting the nozzle to release some of the pressure
G1 Z1 ; raise Z 1mm from current position
G1 E-2 F300 ; retract filament even more
G90 ; set to absolute positioning
G1 X20 ; move X axis close to tower but hopefully far enough to keep the fan from rattling
G1 Y120 ; move bed forward for easier part removal
M84 ; disable motors
G4 S360 ; keep fan running for 360 seconds to cool hotend and allow the fan to be turned off - adjust to your needs
M107 ; turn off fan. Don't use M106 S1. Using M106 S1 may prevent the fan from turning on for the following print. Some say M107 doesn't work for them but if the hotend is below 70 degrees it should work

Starting G-code if Using a Skirt or Brim

starting_g-code_script_without_purge.gcode

G90 ; set to absolute positioning - this line was added in case Cura doesn't include it by default
M82 ; set extruder to absolute mode - this line was added in case Cura doesn't include it by default (may not be needed)
G28 ; home all axes
G92 E0 ; reset extrusion distance

Ending G-code with fan remains on

ending_g-code_script.gcode

M104 S0 ; turn off hotend/extruder heater
M140 S0 ; turn off bed heater
G91 ; set to relative positioning
G1 E-2 F300 ; retract the filament a bit before lifting the nozzle to release some of the pressure
G1 Z1 ; raise Z 1mm from current position
G1 E-2 F300 ; retract filament even more
G90 ; set to absolute positioning
G1 X20 ; move X axis close to tower but hopefully far enough to keep the fan from rattling
G1 Y120 ; move bed forward for easier part removal
M84 ; disable motors

Common Starting G-code request

Prime the nozzle before a print begins

G1 Z0.2 F1200 ; raise nozzle 0.2mm
G92 E0 ; reset extrusion distance
G1 Y10 ; move Y-Axis (bed) 10mm to prep for purge
G1 X100 E12 F600 ; move X-carriage 100mm while purging 12mm of filament
G92 E0 ; reset extrusion distance

Common Ending G-code request

Move bed forward for easier part removal

Add this just before the line with M84 ; disable motors

G90 ; set to absolute positioning
G1 X20 ; move X axis close to tower but hopefully far enough to keep the fan from rattling
G1 Y120 ; move bed forward for easier part removal

Raise gantry up for easier part removal

Add this just before the line with M84 ; disable motors

G90 ; set to absolute positioning
G1 Z121; move gantry all the way up

Turn fan off after print is completed

Nozzle temperature must be below 70°C before command M107 is received else the fan will remain on.
If the fan remains on after a print is completed try increasing G4 S360 to G4 S420. This will wait 420 seconds (7 minutes) before sending command M107.

G4 S360 ; keep fan running for 360 seconds to cool hotend and allow the fan to be turned off - adjust to your needs
M107 ; turn off fan