Midprint nozzle cleaner

add this g code to your custom g code of your printer

before layer change

{if layer_num > 0 and layer_num % 30 == 0}

; --- AUTOMATICKE CISTENI S BEZPECNYM NAVRATEM ---

G1 E-2 F2400

; Zatazeni filamentu

; Sjezd na bezpecnou vzdalenost

G1 Z{layer_z + 5.0} F3000

; Presun k hrebenu

G1 X80 Y-13 F7200

; Cisteni

G1 X42 Y-16 F7500

G1 X80 Y-16 F7500

G1 X42 Y-13 F7500

G1 X80 Y-13 F7500

G1 X61 Y-14.5 F7500

G1 X75 Y-13 F7500

G1 X80 Y-14.5 F7500

G1 X75 Y-16 F7500

G1 X61 Y-14.5 F7500

G1 X47 Y-13 F7500

G1 X42 Y-14.5 F7500

G1 X47 Y-16 F7500

G1 X61 Y-14.5 F7500

G1 X80 Y-16 F7500

G1 X42 Y-13 F7500

G1 X80 Y0 F7500

; vysunuti podlozky

G1 Z{layer_z} F3000

G1 E0 F2400 ; Deretrakce

; --- KONEC CISTENI ---

{endif}

Make sure, that the cleaner is in the right position, it is tight fit with the heatbed. You need to move your nozzle to this coordinates X80 Y-13 and after that, pleace the 3D print.  You need to buy a A1 silicone wiper.  You can adjust the frequency of the cleaning by changing the number 30 in the first line of a code.