when will the new Z-height actually be saved?

Phaedrux

Everything it does at the start of the print is dictated by the slicer start gcode. Can you copy and paste the first 50 lines or so of a slicer gcode file? Also include your current homedelta, bed.g and config.g so we can see exactly what's going on and can tell you what needs to change.

holco62

Cura doesn't let me copy the start G-code, so I took 2 pictures

Start G-code-1.png

Start G-code-2.png

I'll post the rest in a moment

holco62

homedelta (1).g bed (1).g config (1).g

Phaedrux

@holco62 said in when will the new Z-height actually be saved?:

(Extruder Start Gcode),

So I don't see G32 in your start gcode, but you say you have it in the Extruder start gcode section? Why there? What else do you have there?

The reason for the double homing is that you have G28 at the beginning of your bed.g file.

Can you post the first 50 lines of a sliced gcode file so I can see what the slicer is actually outputting?

holco62

four_square_retrac.8mm.gcode

holco62

The G32 is in the Extruder Start G-code.

Extruder Start G-code.png

Phaedrux

;Generated with Cura_SteamEngine 4.8.0
T0
M190 S60
M104 S210
M109 S210
M82 ;absolute extrusion mode
G32
G21 ;metric values 
G90 ;absolute positioning 
M82 ;set extruder to absolute mode 
M107 ;start with the fan off 
G28 ;Home 
G1 Z15.0 F1000;short move 
G92 E0 ;zero the extruded length 
G1 F200 E3 ;extrude 3mm of feed stock adjust so I don't have to remove any filament 
G92 E0 ;zero the extruded length again 
G1 F4000 ;move to bed 
;Put printing message on LCD screen 
M117 Printing... 
;G5; this is in order to resume on Power failure (only works on SD prints)
M83 ;relative extrusion mode
G1 F3000 E-8
;LAYER_COUNT:99
;LAYER:0
M107
G0 F3600 X-20.499 Y-9.085 Z0.25
;TYPE:SKIRT
G1 F3000 E8
G1 F1800 X-20.49 Y-9.761 E0.02459
G1 X-20.438 Y-10.692 E0.03392
G1 X-20.306 Y-11.615 E0.03392

I think you should remove the G32 from the Extruder start gcode. That's not a usual place to put it.

Also remove the G28 from bed.g. It's better to keep the commands separate so it's more clear about what is happening when.

Then change your start gcode in cura to be this

G21 ;metric values 
G90 ;absolute positioning 
M82 ;set extruder to absolute mode 
M107 ;start with the fan off 
G28 ;Home 
G32 ; calibration
G92 E0 ;zero the extruded length 
G1 F200 E3 ;extrude 3mm of feed stock adjust so I don't have to remove any filament 
G92 E0 ;zero the extruded length again 
G1 F4000 ;move to bed 
;Put printing message on LCD screen 
M117 Printing

holco62

Works perfectly now

https://youtu.be/tdl2iDNiC9Q

What did the line "G1 Z15.0 F1000; short move" that has now been removed?

Btw, I think it's really remarkable that you can remember all those codes

Phaedrux

@holco62 said in when will the new Z-height actually be saved?:

What did the line "G1 Z15.0 F1000; short move" that has now been removed?

Nothing useful.

holco62

Another question

If the printer runs the G32 calibration, the nozzle leaves a little filament on each calibration spot, now I wondered if it is possible that after each print job, for example, 50mm retraction takes place so that the hotend is always free of filament, and that after the G32 calibration the 50mm (or more) is immediately re-fed.

holco62

@Phaedrux said in when will the new Z-height actually be saved?:

@holco62 said in when will the new Z-height actually be saved?:

What did the line "G1 Z15.0 F1000; short move" that has now been removed?

Nothing useful.

Haha, oké