Ender 3 pro nozzle brush mount (compliance mechanism)

A nozzle brush holder with a compliance mechanism to clean the nozzle gently.
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updated February 8, 2024

Description

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I originally designed the BLUE one as I have installed the hand-screw wheel on the X plate. Then, I made the Red one for normal ender 3 pro, but its compliance may be limited by the hand-screw wheel

No additional hardware is needed to install this mod (except the brush). Compliance design enhanced the longevity of the nozzle life. 

20240208: I realize some PEI sheet has handles at the corners, so I have made one more version that has a logner brush mount so you can mount the brush closer to the centerline.

this is the hotend I am using, u may need to modify the brush location for other hotend: https://www.creativity3dprinter.com/ExtruderKit_CoolingFan_MK8DirectDrive?search=direct%20drive%20ender&category_id=0

Please see the video below in action.

original design is mounting at the end of x-axle https://www.printables.com/model/391282-ender-3-pro-nozzle-cleaner-for-creativity-direct-d

######################################################################
# Clean Nozzle 
# my brush location is at X=190-225 Y=-15 Z=-4
######################################################################

[gcode_macro CLEAN_NOZZLE]
description: Heat and clean nozzle
gcode:
  G28
  G1 Z15 ; raise nozzle
  M109 S200 ; wipe temp
  M117 Wiping Nozzle... ; progress indicator message on LCD
  G1 E-10 F100 ; retract 10mm of filament
  G1 X180 Y-15 F3000 ; move above wiper pad
  G1 Z-4 ; push nozzle into wiper
  G1 X225 Y-15 F1000 ; slow wipe
  G1 X190 Y-15 F1000 ; slow wipe
  G1 X225 Y-15 F1000 ; slow wipe
  G1 X190 Y-15 F1000 ; slow wipe
  G1 X225 Y-15 F2000 ; slow wipe
  G1 X190 Y-15 F2000 ; slow wipe
  G1 X225 Y-15 F2000 ; fast wipe
  G1 X190 Y-15 F2000 ; fast wipe
  G1 X225 Y-15 F4000 ; fast wipe
  G1 X190 Y-15 F4000 ; fast wipe
  G1 X225 Y-15 F4000 ; fast wipe
  G1 X190 Y-15 F4000 ; fast wipe
  G1 X225 Y-15 F4000 ; fast wipe
  G1 X190 Y-15 F4000 ; fast wipe
  G1 X225 Y-15 F4000 ; fast wipe
  G1 X190 Y-15 F2000 ; fast wipe
  G1 X225 Y-15 F2000 ; fast wipe
  G1 X190 Y-15 F1000 ; slow wipe
  G1 X180 Y-15 F1000 ; slow wipe (and wipeout)
  G1 Z15 ; raise extruder
  G1 E10 F100 ; move filament back
  M109 S0 ; set extruder temp to 0
  M117 Nozzle Cleaned.. ; LCD message
  G28 ; home XYZ
  M117 Ready... ; LCD message

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