When starting a new print. The machine always starts too high in the first layer. Every new print I need to change the Z-offset to? +/- - 0.45mm other wise the print would’t stick to the bed.
I already tried to do some automatic calbration but this would help. it is always too high. It just looks like the machine doesn’t remember I calibrated it
I use cura to make my gcodes, but I don’t think the problem has’t to do with cura.
I hope someone can help me,
thanks in advance
Are you overriding the Initial Layer Height, or leaving it linked to layer height?
Can you upload your GCode? That’ll tell us if it’s the slicer or the printer.
No i don’t override the iniial layer that i know off.
Because i couldn’t upload a file as a new user i copied the first few lines of the G-code here.
;FLAVOR:Marlin
;TIME:11687
;Filament used: 9.06525m
;Layer height: 0.1
;MINX:77.062
;MINY:98.49
;MINZ:0.2
;MAXX:242.748
;MAXY:251.688
;MAXZ:5
;Generated with Cura_SteamEngine 5.3.0
M82 ;absolute extrusion mode
M140 S80 ;Set Bed Temperature
M104 S250 ;Set Hotend Temperature
G28 ;home
G90 ;absolute positioning
G1 X-10 Y-10 F3000 ;Move to corner
G1 Z0 F1800 ;Go to zero offset
M109 S250 ;Wait for Hotend Temperature
M190 S80 ;Wait for Bed Temperature
G92 E0 ;Zero set extruder position
G1 E20 F200 ;Feed filament to clear nozzle
G92 E0 ;Zero set extruder position
G92 E0
G92 E0
G1 F3600 E-5
;LAYER_COUNT:49
;LAYER:0
M107
G0 F1440 X81.726 Y118.066 Z0.2
;TYPE:SKIRT
G1 F3600 E0
G1 F1080 X84.245 Y117.35 E0.0871
G1 X121.553 Y117.35 E1.32797
G1 X121.553 Y106.816 E1.67833
G1 X122.344 Y104.012 E1.77523
G1 X123.897 Y101.811 E1.86483
G1 X124.916 Y100.702 E1.91492
G1 X127.12 Y99.286 E2.00205
G1 X129.836 Y98.49 E2.09618
G1 X234.421 Y98.491 E5.5747
G1 X237.226 Y99.283 E5.67164
G1 X239.427 Y100.835 E5.76121
G1 X240.536 Y101.854 E5.8113
G1 X241.952 Y104.058 E5.89844
G1 X242.748 Y106.774 E5.99257
G1 X242.747 Y151.36 E7.47551
G1 X242.334 Y152.813 E7.52575
G1 X242.748 Y154.226 E7.57472
G1 X242.747 Y198.81 E9.05759
G1 X241.972 Y201.54 E9.15198
G1 X241.33 Y202.524 E9.19106
G1 X241.333 Y244.502 E10.58725
G1 X240.605 Y247.074 E10.67616
G1 X239.226 Y249.041 E10.75605
G1 X237.81 Y250.229 E10.81753
G1 X235.717 Y251.386 E10.89707
G1 X233.945 Y251.648 E10.95665
G1 X130.397 Y251.688 E14.40067
G1 X128.244 Y251.235 E14.47385
G1 X126.413 Y250.191 E14.54395
G1 X125.009 Y249.01 E14.60497
G1 X123.649 Y247.024 E14.68503
G1 X122.933 Y244.505 E14.77213
G1 X122.933 Y235.75 E15.06332
G1 X84.248 Y235.75 E16.34999
G1 X81.676 Y235.022 E16.4389
G1 X79.709 Y233.643 E16.5188
G1 X78.521 Y232.227 E16.58027
G1 X77.364 Y230.134 E16.65981
G1 X77.102 Y228.362 E16.71939
G1 X77.062 Y124.814 E20.16341
G1 X77.515 Y122.661 E20.23659
G1 X78.559 Y120.83 E20.30669
G1 X79.74 Y119.426 E20.36771
G1 X81.726 Y118.066 E20.44777
G0 F1440 X81.898 Y118.433
G1 F1080 X84.301 Y117.75 E20.53086
G1 X121.953 Y117.75 E21.78317
G1 X121.953 Y106.872 E22.14498
G1 X122.711 Y104.186 E22.2378
G1 X124.192 Y102.082 E22.32338
G1 X125.177 Y101.01 E22.3718
G1 X127.289 Y99.653 E22.4553
G1 X129.893 Y98.89 E22.54555
G1 X234.365 Y98.891 E26.0203
G1 X237.052 Y99.65 E26.11317
G1 X239.156 Y101.13 E26.19872
G1 X240.228 Y102.115 E26.24714
G1 X241.585 Y104.227 E26.33064
G1 X242.348 Y106.831 E26.42089
G1 X242.347 Y151.304 E27.90007
G1 X241.918 Y152.814 E27.95228
G1 X242.348 Y154.283 E28.00319
G1 X242.347 Y198.754 E29.4823
G1 X241.603 Y201.374 E29.57289
G1 X240.93 Y202.406 E29.61387
G1 X240.933 Y244.446 E31.01212
G1 X240.238 Y246.901 E31.09698
G1 X238.928 Y248.769 E31.17287
G1 X237.585 Y249.896 E31.23118
G1 X235.587 Y251.001 E31.30712
G1 X233.887 Y251.252 E31.36428
G1 X130.436 Y251.288 E34.80507
G1 X128.388 Y250.857 E34.87468
G1 X126.643 Y249.862 E34.94149
G1 X125.309 Y248.74 E34.99947
G1 X124.016 Y246.852 E35.07558
G1 X123.333 Y244.449 E35.15867
G1 X123.333 Y235.35 E35.4613
G1 X84.304 Y235.35 E36.75941
G1 X81.849 Y234.655 E36.84427
G1 X79.981 Y233.345 E36.92016
G1 X78.854 Y232.002 E36.97847
G1 X77.749 Y230.004 E37.05441
G1 X77.498 Y228.304 E37.11157
G1 X77.462 Y124.853 E40.55236
G1 X77.893 Y122.805 E40.62197
G1 X78.888 Y121.06 E40.68878
G1 X80.01 Y119.726 E40.74676
G1 X81.898 Y118.433 E40.82287
Try luban and let us know if you have the same problem.
This is indeed not liban but cura 5.3.0
Try it in luban. I feel like this is a cura thing.
That tells the print head to move to a Z height of 0.2mm, which doesn’t match the layer height comment of 0.1.
Cura for some reason thinks it can’t go lower than 0.2mm.
My GCode always has that MINZ comment the same as the layer height. Check your Initial Layer height. I don’t remember if that’s hidden by default or not, but I have it visible.
generates
;Layer height: 0.04
;MINX:5.2
;MINY:5.2
;MINZ:0.04
;MAXX:119.8
;MAXY:119.8
;MAXZ:0.04
G90 ;absolute positioning
G0 F4800 X5.6 Y119.4 Z0.04
You said ±0.45mm, which is a lot more than the 0.2mm I pointed out in your GCode.
Have you checked the calibration sensor is at the correct height?