Automatic cleaning of nozzle for filament that has had time to ooze before printing begins.
The cleaning is started just before printing begins, and you are free to sit ready with a cloth or something else to remove excess filament.
The handle is a remix from #BunZo https://www.thingiverse.com/thing:4732962

I made the handle in 2 variations. One for 3mm Threaded Insert, and one where you can form the thread in the plastic with a 3mm Screw.
Handles are made for 235x235 beds, with 170mm between the ajustment screws.

Gcode used for purification process: Regarding your ofsets on your printer you may have to edit the gcode.
Insert the Gcode as the last thing befor printing starts.
Runing the Gcode is on your own risk. :-) Beaware the the nozzle hight in this example goes to Z=0.0

Gcode used: (Use of Gcode, on your own risk, as offsets can be different on your printer)

; CLEAN NOZZLE
G1 X238.0 Y70.0 Z5.0 F7000.0; Nozzle Positioning
G1 X238.0 Y50.0 Z0.0 F5000.0; Position Nozzle in Clean start position
G1 X245.0 Y50.0 Z0.0 F5000.0; Move X + 10mm
G1 X245.0 Y42.0 Z0.0 F5000.0; Move Y -8mm
G1 X238.0 Y42.0 Z0.0 F5000.0; Move X -10mm
G1 X238.0 Y34.0 Z0.0 F5000.0; Move Y -8mm
G1 X245.0 Y34.0 Z0.0 F5000.0; Move X + 10mm
G1 X245.0 Y26.0 Z0.0 F5000.0; Move Y -8mm
G1 X238.0 Y26.0 Z0.0 F5000.0; Move X -10mm
G1 X238.0 Y5.0 Z5.0 F5000.0; Move Y + 21mm and X + 5mm for Print Start
; END CLEAN NOZZLE

The Brass Brush Holder, is made in 4 different variations. Which one you want to use, depends on where in X direction you want the Brass Brush to sit.

Ajust the hight of the Brush, that i just touches your Fan Schroud lightly, To ajust this manually move your extruder to the Brass position, and lower the Nozzle gently to zero, with the Fan Schroud parked over the Brush.

I used Double sided tape, to stick the Brush to its mounting surface.

Brass Brush used in this exsample are from Amazone.
https://www.amazon.de/dp/B08W51L2YX?ref_=cm_sw_r_cp_ud_dp_T2_T6M4F2NBC3VVKA1H4TD0

2022-04-06:
Made a refinement in the Nozzle movement and uploadet a video with the movement change. It uses the hole Brush for cleaning.

https://www.youtube.com/shorts/iFWdkXiTAcc

Gcode used: (Use of Gcode, on your own risk, as offsets can be different on your printer)

; CLEAN NOZZLE
G1 X240.0 Y70.0 Z5.0 F7000.0 ; Nozzle Positioning (Nozzle and Bed heating and temp stabilization in this position)
G1 X236.0 Y50.0 Z0.0 F5000.0 ; Position Nozzle in Clean start position
G1 X236.0 Y45.0 Z0.0 F5000.0 ; Move into Brass Brush in Cleaning height Z=0
G1 X243.0 Y45.0 Z0.0 F5000.0 ; Move X +7mm
G1 X243.0 Y40.0 Z0.0 F5000.0 ; Move Y -5mm
G1 X236.0 Y40.0 Z0.0 F5000.0 ; Move X -7mm
G1 X236.0 Y35.0 Z0.0 F5000.0 ; Move Y -5mm
G1 X243.0 Y35.0 Z0.0 F5000.0 ; Move X +7mm
G1 X243.0 Y30.0 Z0.0 F5000.0 ; Move Y -5mm
G1 X236.0 Y30.0 Z0.0 F5000.0 ; Move X +7mm
G1 X236.0 Y25.0 Z0.0 F5000.0 ; Move Y -5mm
G1 X243.0 Y25.0 Z0.0 F5000.0 ; Move X +7mm
G1 X243.0 Y20.0 Z0.0 F5000.0 ; Move Y -5mm
G1 X236.0 Y20.0 Z0.0 F5000.0 ; Move X +7mm
G1 X236.0 Y15.0 Z0.0 F5000.0 ; Move Y -5mm
G1 X243.0 Y15.0 Z0.0 F5000.0 ; Move X +7mm
G1 X243.0 Y10.0 Z5.0 F5000.0 ; Move Y -5mm and X +5mm To get free of Brass Brush
; ** END CLEAN NOZZLE