G21       ;metric values
G90       ;absolute positioning
M82       ;set extruder to absolute mode
M106      ;start with the fan on
G28 X0 Y0 ;home X/Y
G28 Z0    ;home Z
G92 E0    ;zero the extruded length
G29       ;initiate auto bed leveling sequence
;start cleaning sequance
G1 X250 Y150 Z15 F4000
G1 X250 Y150 Z0.30 F1000
G1 X1 Y150 Z0.25 E15.0 F2000
G1 X1 Y150 Z0.25 E14.0 F4000
G1 X1 Y1 Z0.25 F16000
G1 X1 Y1 Z0.25 E15.0 F4000
G92 E0
M107      ;start with the fan off
;end cleaning sequance
;G92 X132.4 Y20 ;correct bed origin (G29 changes it)