Ender 3 nozzle brush

A simple and effective way to clean the nozzle before each print. I found a wire brush on ebay (see photo) where I sawed off the handle.

Since I do not like heat inserts, the entire construction is made with nuts and bolts.

For assembly you need:
Screw M3 x 12 - 8 x
Screw M3 x 10 - 2 x (longer bolts will work if you don't use a fan guard above your board)
Nut M3 - 10 x

If you like this design, please post your print with a picture.

Anybody willing to support with a small donation is more than welcome ;-)

My G-code looks like this (Klipper macro):

[gcode_macro CLEAN_NOZZLE]
gcode:
variable_start_x: 75
variable_start_y: -14
variable_start_z: 5.5
variable_wipe_dist: -50
variable_wipe_qty: 6
variable_wipe_spd: 400
variable_raise_distance: 10
variable_clear_distance: 10

gcode:
 {% if "xyz" not in printer.toolhead.homed_axes %}
   G28
 {% endif %}
 
 G90                                            ; absolute positioning
 ## Move nozzle to start position
 G1 X{start_x} Y{start_y} F6000
 G1 Z{start_z} F1500

 ## Retract filament
 G1 E-2 F3000

 ## Wipe nozzle
 {% for wipes in range(1, (wipe_qty + 1)) %}
   G1 X{start_x + wipe_dist} F{wipe_spd * 60}
   G1 X{start_x} F{wipe_spd * 60}
 {% endfor %}

 ## Raise nozzle
 G1 Z{raise_distance} F3000
 G1 Y{clear_distance} F6000

Change the 8 variables according to your setup.

Feel free to donate ;-)

https://paypal.me/BigDieter?country.x=DE&locale.x=de_DE