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OK, back to business. There are serious problems in that StartUp Gcode. The G92 E0 line that is commented out is part of the problem. Without it, the printer isn't synced to the E numbers in the gcode and definitely doesn't know where the end of the filament is. It makes for a huge retraction when the StartUp Gcode ends with the E at around 150 (maybe). Then after the layer start the G1 F4200 E0 is telling the printer to move to 0 which from 150 makes for a large retraction. It isn't the only problem.
I would make the startup something like I've scribbled below. It should work provided the extruders don't have their own StartUp Gcode. If they do then they might cause problems with this code.
Start by making a project file ("File | Save Project") and post it here. It will also be your backup if the code below doesn't help.
After making the project file, in Cura go to "Settings / Printer / Manage Printers" and then "Machine Settings" and clear the StartUp G-Code box. Then copy the code below and paste it into the StartUp G-Code box.
;-----StartUp G-Code
M140 S{material_bed_temperature_layer_0} ; Start to heat the bed
M109 S175 ; Warm up the hot end a bit and wait for it
M190 S{material_bed_temperature_layer_0} ; Heat the bed all the way and wait for it
G28 ;Auto-Home
G29 ; Auto Level
G0 F1200 Z7 ; Move up
G0 X0 Y0 ; Ensure nozzle is at the origin to ooze there
M109 S{material_print_temperature_layer_0, initial_extruder_nr} ; Heat the hot end to Initial Layer Print Temp
G92 E0 ;Reset active extruder
G0 F5000 X1 Y20 Z0.3 ;move to purge start
G1 F1500 X1 Y200.0 F1500.0 E15 ;draw 1st line
G0 F5000 X4 Y200.0 ;move over 3mm
G1 F1500 X4 Y20 E30 ;draw 2nd line
G1 F1200 Z1.0 ;move z up
;-----End of StartUp
You only need to print the first layer of a file to see if the above will work. Post the project file first though. There can be an interference if any Extruder StartUp Gcode isn't taken into account.
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Alain_D 5
Maverick17 = Zebulon17 ? 😉
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GregValiant 1,342
Hypno-Toad = 18
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OK, back to business. There are serious problems in that StartUp Gcode. The G92 E0 line that is commented out is part of the problem. Without it, the printer isn't synced to the E numbers in the gcode and definitely doesn't know where the end of the filament is. It makes for a huge retraction when the StartUp Gcode ends with the E at around 150 (maybe). Then after the layer start the G1 F4200 E0 is telling the printer to move to 0 which from 150 makes for a large retraction. It isn't the only problem.
I would make the startup something like I've scribbled below. It should work provided the extruders don't have their own StartUp Gcode. If they do then they might cause problems with this code.
Start by making a project file ("File | Save Project") and post it here. It will also be your backup if the code below doesn't help.
After making the project file, in Cura go to "Settings / Printer / Manage Printers" and then "Machine Settings" and clear the StartUp G-Code box. Then copy the code below and paste it into the StartUp G-Code box.
;-----StartUp G-Code
M140 S{material_bed_temperature_layer_0} ; Start to heat the bed
M109 S175 ; Warm up the hot end a bit and wait for it
M190 S{material_bed_temperature_layer_0} ; Heat the bed all the way and wait for it
G28 ;Auto-Home
G29 ; Auto Level
G0 F1200 Z7 ; Move up
G0 X0 Y0 ; Ensure nozzle is at the origin to ooze there
M109 S{material_print_temperature_layer_0, initial_extruder_nr} ; Heat the hot end to Initial Layer Print Temp
G92 E0 ;Reset active extruder
G0 F5000 X1 Y20 Z0.3 ;move to purge start
G1 F1500 X1 Y200.0 F1500.0 E15 ;draw 1st line
G0 F5000 X4 Y200.0 ;move over 3mm
G1 F1500 X4 Y20 E30 ;draw 2nd line
G1 F1200 Z1.0 ;move z up
;-----End of StartUp
You only need to print the first layer of a file to see if the above will work. Post the project file first though. There can be an interference if any Extruder StartUp Gcode isn't taken into account.
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Alain_D 5
Dans le forum "lesimprimantes3d.fr", un certain Maverick17 a posé exactement la même question... 😄
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