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Marlin 2 prints on air (auto leveling issue?) (1 reply)

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Hi guys, I've installed marlin 2 on a azsmz mini and all seems to run OK, so just tried to do the first print but the print starts way above the bed surface, at z15, on the file I tried to print there is a line that cura ads:

G1 Z15.0 F6000 ;Move the platform down 15mm

so I remove it and tried again but now after the bed leveling routine the z axis leaves it at z5 so it start to print there.

This it's a segment of the gcode from the sd card:

;FLAVOR:Marlin
;TIME:5015
;Filament used: 5.8069m
;Layer height: 0.2
;MINX:54.348
;MINY:79.53
;MINZ:0.3
;MAXX:139.748
;MAXY:141.93
;MAXZ:19.9
;Generated with Cura_SteamEngine 4.1.0
M106 P1 S255 ;.TurnONFanHeatsinkHeater
M104 S200
M105
M109 S200
M82 ;absolute extrusion mode
G28 ;Home
G29 ;.AutoLeveling
G1 Z15.0 F6000 ;Move the platform down 15mm
;Prime the extruder
G92 E0
G1 F200 E3
G92 E0
G92 E0
G92 E0
G1 F1500 E-6.5
;LAYER_COUNT:99
;LAYER:0
M107
G0 F2571.4 X56.984 Y80.675 Z0.3
;TYPE:SKIRT
G1 F1500 E0

so there it's the line: G0 F2571.4 X56.984 Y80.675 Z0.3
which it tells marlin that has to move the z axis to z0.3 but marlin ignores it, x and y moves correctly so I imagine I failed to apply this guide to use an inductive sensor as auto leveling method.

Any of you guys can give me a clue what parameter to look for?, thanks.

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