Ender 3 Nozzle Brush

The original mounted on the left side with a binder clip. I don't use binder clips with my magnetized bed, and I wanted a nozzle wiper to mount on the right side to not interfere with my custom parts cooler attachment on the print head. 

So I modded the original to mount on the right. Changed it up a bit and added screw holes. So this will only be for people not worried about drilling holes in your bed. Its not going to hurt it, just not everyone's going to want to attempt it. There is also a included file for a template that goes on the top of the bed to mark the holes so it lines up perfect. I drilled the holes then tapered them so once the screws go in they are flush with the build plate.  Screws must be no longer than 13 mm total. Mine were longer and I just cut them the right length with a pair of pliers.

I also made the g code for it, tested it several times and changed it until I got it just right. 

; Ender 3 S1 Start G-code

G92 E0 ; Reset Extruder

G28 ; Home all axes

G1 Z10.0 F3000 ; Move Z Axis up little to prevent scratching of Heat Bed

G1 X0 Y0

M104 S{material_print_temperature_layer_0}

M190 S{material_bed_temperature_layer_0}

M109 S{material_print_temperature_layer_0}

G1 X0.1 Y20 Z0.3 F5000.0 ; Move to start position

G1 X180 Y0 Z7 F5000.0; Position to nozzle wiper

G1 X230 Y0 Z7 F5000.0; Wipe L-R

G1 X180 Y0 Z7 F5000.0; Wipe R-L

G1 X230 Y0 Z7 F5000.0; Wipe L-R

G1 X150 Y0 Z7 F5000.0; Wipe R-L

G92 E0 ; Reset Extruder

G1 Z2.0 F3000 ; Move Z Axis up little to prevent scratching of Heat Bed

The 5 lines after “Move to start position” is for the wiping action if you only want to add that to you existing start g code.

The brush is Glued in the holder. Overall its nice and solid not being held on with a binder clip. And it does exactly what its supposed to do. I'm very pleased with it.