Top mounted nozzle wiper for Core One (A1 brush)

This is a remix of the excellent nozzle wiper by @PysselMedHeg but using wipers from the Bambu Lab A1 printer instead.

The wiper must be cut in half to fit. Two wipers for the price of one! 

Example GCode:

; Wipey wipe
G0 Y0 ; Move to wiper without touching vent lever.
G0 X2.5
G0 Y-12
; Three ovals over the wiper.
G3 X2.5  Y-17 I1.5  J-2.5
G3 X11.5 Y-17 I4.5  J7
G3 X11.5 Y-12 I-1.5 J2.5
G3 X2.5  Y-12 I-4.5 J-7
G3 X2.5  Y-17 I1.5  J-2.5
G3 X11.5 Y-17 I4.5  J7
G3 X11.5 Y-12 I-1.5 J2.5
G3 X2.5  Y-12 I-4.5 J-7
G3 X2.5  Y-17 I1.5  J-2.5
G3 X11.5 Y-17 I4.5  J7
G3 X11.5 Y-12 I-1.5 J2.5
G3 X2.5  Y-12 I-4.5 J-7
; back to start position
G0 Y0 ; avoid hitting the lever
G0 X249 
G0 Y-2.5 Z15 ; move away and ready for the purge
; Wipe done

I've placed it in my start gcode, before the extruder purge line.