Summary

An automatic nozzle cleaner for ender 3d printer series,
you can find instructions below

Print Settings

Printer Brand:

Creality

Printer:

Ender 3

Rafts:

No

Supports:

No

Resolution:

Any / used .2

Infill:

Any

Filament: Any Any Any

Notes:

Enable brim for better adhesion

Instructions

Requirements

Software needed:

Klipper
Mainsail / Fluidd / Octoprint / etc

Hardware needed:

3d printer (obviosuly)
A brass/steel brush (same material as your nozzle recommended)
Glue (optional)

GCODE

Customise the variables below to your machine (you can find the CNF file in the files section)

IMPORTANT!

to make the nozzle able to reach the brush, you need to modify "position_max" in stepper_x section, in the printer.cfg file

[gcode_macro CLEAN_NOZZLE]
variable_start_x: 237.5 ;where the nozzle will start
variable_start_y: 18 ;where the bed will start
variable_start_z: 17 ;where the z axi will start
variable_wipe_dist_y: -15 ;how far will the bed move
variable_wipe_qty: 3 ;how many times will it move
variable_wipe_spd: 300 ;wipe speed
variable_raise_distance: 18 ;how much it will be raised

gcode:
{% if "xyz" not in printer.toolhead.homed_axes %}
G28
{% endif %}

G90 ;absolute positioning
;Move nozzle to start position
G1 Z{start_z} F1500
G1 X{start_x} Y{start_y} F6000

;Wipe nozzle
{% for wipes in range(1, (wipe_qty + 1)) %}
;WIPE LEFT
G1 X{start_x + 2} Y{start_y - wipe_dist_y} F{wipe_spd 30}
G1 X{start_x + 2} Y{start_y - wipe_dist_y} F{wipe_spd 30}
G1 X{start_x + 2} Y{start_y - wipe_dist_y} F{wipe_spd 30}
;WIPE RIGHT
G1 X{start_x - 2} Y{start_y + wipe_dist_y} F{wipe_spd 30}
G1 X{start_x - 2} Y{start_y + wipe_dist_y} F{wipe_spd 30}
G1 X{start_x - 2} Y{start_y + wipe_dist_y} F{wipe_spd 30}

{% endfor %}

G1 Z 25 ;raises the z axi
G28 ;homes all axis

INSTRUCTIONS

Paste the file into the machine section and in the 'printer.cfg' file add: [include nozzleclean]
if you decide to change the file's name, put it instead of nozzleclean
to attach the part, you need to unscrew the bed screw (might need to unscrew two) and put it under the spring