Bộ gạt Nozzle cho Ender 3 V3 KE

Materials:

• 1x M3 6mm (I used a thin flat head)

• ~8mm PTFE tube

• A1 Silicon Brush (cut to 16mm or 6 studs)

• M4 nut (i used a square nut)

Assembly:

1. Cut the silicon brush down to 16mm or 6 studs and stick it as shown on the images

2. Screw in the PTFE tube make sure it is flush with the silicon brush

3. Mount the wiper to the lower left corner and secure it using the M4 nut.

4. Mount the bucket holder to the left side gantry and attach the cable

G-code:

Start G-code

; === Safe Start G-code with Purge + Relative Flicker + Z lift + Purge Line ===

M220 S100 ; Reset Feedrate

M221 S100 ; Reset Flowrate

; Heat bed

M140 S[bed_temperature_initial_layer_single] ; Set bed temp (no wait)

M104 S0 ; Keep nozzle cold

; Home axes

G28

; Full bed leveling

G29

; Move to purge start position safely

G0 Z10 F5000 ; Raise nozzle to safe height

G0 X-10.7 Y25 F6000 ; Move to purge XY position at Z=10

G0 Z+3 F5000 ; Lower nozzle to starting purge height

; Wait for bed temp, then heat nozzle

M190 S[bed_temperature_initial_layer_single] ; Wait for bed temp

M104 S[nozzle_temperature_initial_layer] ; Start nozzle heating

M109 S[nozzle_temperature_initial_layer] ; Wait for nozzle to reach temp

; Purge filament

G92 E0 ; Reset extruder

G1 E25 F300 ; Extrude 25mm slowly

M400

; Blast blower fans for 10s

M106 P0 S255

G4 P20000

M106 P0 S0

; Move back to Y = 18 after purge

G0 Y18 Z-1 F6000 ; Move nozzle to Y=18 at moderate speed

; Relative mode for flicker/wipe

G91

; --- Flicker/wipe sequence (Z from -1 to -1.5, 5 cycles, mm/min) ---

G0 Y-25 F18000

G0 Y25 F18000

G0 Z-0.1 F3000

G0 Y-25 F18000

G0 Y25 F18000

G0 Z-0.1 F3000

G0 Y-25 F18000

G0 Y25 F18000

G0 Z-0.1 F3000

G0 Y-25 F18000

G0 Y25 F18000

G0 Z-0.1 F3000

G0 Y-25 F18000

G0 Y25 F18000

G0 Z-0.1 F3000 ; Final Z reaches -1.5

; Switch back to absolute mode and lift Z safely

G90 ; Absolute positioning

G0 Z10 F1500 ; Lift to safe height at moderate speed

; Purge line routine

G92 E0

G1 X-2.0 Y20 Z0.3 F5000.0 ;Move to start position

G1 Z0.2 ;Lower nozzle to printing height

G1 Y145.0 F1500.0 E15 ;Draw the first line

G1 X-1.7 F5000.0 ;Move to side a little

G1 Y30 F1500.0 E15 ;Draw the second line

G92 E0

End G-code

G91 ; Relative positionning

G1 E-2 F2700 ; Retract a bit

G1 E-2 Z0.2 F2400 ; Retract and raise Z

G1 X5 Y5 F3000 ; Wipe out

G1 Z5 ; Raise Z more

G90 ; Absolute positionning

G1 X2 Y218 F3000 ; Present print

M106 S0 ; Turn-off fan

M104 S0 ; Turn-off hotend

M140 S0 ; Turn-off bed

M84 X Y E ; Disable all steppers but Z