M104 S210
G28 ; home all axes
G29; bltouch niveau auto
M109 S210
G1 X10 Y0 F2000; move X/Y to min endstops
G92 E0 ; zero the extruded length
G1 Z0.3 ; lower
G1 X35 E30 F225 ; purge nozzle with 30mm of filament
G1 X100 Y20 F2100
G92 E0 ; zero the extruded length again
M117 Printing...