Ender 3 Startup Code

1.Start.gcode

; Ender 3 Custom Start G-code
M117 Heating bed...
M190 S{material_bed_temperature_layer_0} ; Want bed hot before level

M117 Reset extruder
G92 E0 ; Reset Extruder

M117 Homing all...
G28 ; Home all axes
;M117 Homing Z Probe...
;G28 Z ; home z again
M117 Generating mesh...
G29; auto bed leveling
;M420 S1 ; use bed leveling

M117 Heating extruder...
M109 S{material_initial_print_temperature} ; wait for extruder to reach temp

M420 Z0; disable Z fade
M900 K0; disable Linear Advance

G1 Z2.0 F3000 ; Move Z Axis up little to prevent scratching of Heat Bed
G1 X0.1 Y20 Z0.3 F5000.0 ; Move to start position
G1 X0.1 Y200.0 Z0.3 F1500.0 E15 ; Draw the first line
G1 X0.4 Y200.0 Z0.3 F5000.0 ; Move to side a little
G1 X0.4 Y20 Z0.3 F1500.0 E30 ; Draw the second line
G92 E0 ; Reset Extruder
G1 Z2.0 F3000 ; Move Z Axis up little to prevent scratching of Heat Bed
G1 X5 Y20 Z0.3 F5000.0 ; Move over to prevent blob squish

M117 Printing...

2.End.gcode

G91 ;Relative positioning
G1 E-2 F2700 ;Retract a bit
G1 E-2 Z0.2 F2400 ;Retract and raise Z
G1 X5 Y5 F3000 ;Wipe out
G1 Z10 ;Raise Z more
G90 ;Absolute positionning

G1 X0 Y{machine_depth} ;Present print
M106 S0 ;Turn-off fan
M104 S0 ;Turn-off hotend
M140 S0 ;Turn-off bed

M84 X Y E ;Disable all steppers but Z