Nozzle auto-clean (GCODE)

Requirements

Software needed:

• Klipper
• Mainsail / Fluidd / Octoprint / etc

Hardware needed:

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

STEP-BY-STEP INSTRUCTION

1. Create a .CFG file in your machine's files and name it however you want,
2. Paste the GCODE from the .TXT file into it (you can find it in the files section),
3. Modify the code according to your machine,
4. In printer.cfg add [include yourfilename.cfg],
5. Make sure your nozzle is able to reach the brush by modifying position_max in stepper_x section, in printer.cfg.

GCODE

[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