I have an Ender 3 and I have a problem with auto home. I use auto home and then level the bed with the wheels beneath the bed. I then start a print and the first layer is well above the bed. Perhaps about a millimeter. If I stop the print at this point and level the bed so that the first layer prints the normal paper width above the bed, everything works fine.
The stops for the 3 axes seem to be in the right places and there is nothing noticeable obstructing them. When I use auto home it does touch the stops at all 3 axes. My belts seem to be tight and there is no movement of the bed if I try to jiggle it with my hand.
Is there a way to adjust the Z axis so that the auto home elevation and the elevation of first layer of the print will be the same?
This is an example of the first lines of G-code:
;FLAVOR:Marlin
;TIME:4724
;Filament used: 1.70716m
;Layer height: 0.16
;MINX:96.551
;MINY:96.545
;MINZ:0.2
;MAXX:138.448
;MAXY:138.455
;MAXZ:100.4
;Generated with Cura_SteamEngine 4.5.0
M140 S50
M105
M190 S50
M104 S200
M105
M109 S200
M82 ;absolute extrusion mode
; Ender 3 Custom Start G-code
G92 E0 ; Reset Extruder
G28 ; Home all axes
G1 Z2.0 F3000 ; Move Z Axis up little to prevent scratching of Heat Bed
G1 X0.1 Y20 Z0.3 F5000.0 ; Move to start position
G1 X0.1 Y200.0 Z0.3 F1500.0 E15 ; Draw the first line
G1 X0.4 Y200.0 Z0.3 F5000.0 ; Move to side a little