Hey all,
Failed printjobs can have a lot of causes. 😖
Causes can be found in your printer, but also in your slicer.
Do you have a project file for us? It contains the printer and settings we need for troubleshooting.
To save a project file go to File -> Save project.
I noticed in version 5.1 of Cura, it now has a standby temp of 175 for pla. It preheats nozzle to 175, then heats bed, then resumes heating the nozzle to print setting. This is part of the start code in your machine profile. Might want to see if this is part of issue.
From what I've read the Creality definition file for the Ender 3 Pro (at least) was altered to add that "heat to standy" line to keep down oozing during the Auto-Level routine. It's in there whether you have an ABL or not. You can stick a semi-colon in front of the line and the printer will ignore it.
I would suggest that you change it to M104 S{material_print_temperature_layer_0}. That will start the hot end heating and start the bed heating without waiting.
This is from the new definition file:
; Ender 3 Custom Start G-code
G92 E0 ; Reset Extruder
G28 ; Home all axes
M104 S{material_standby_temperature} ; Start heating up the nozzle most of the way
M190 S{material_bed_temperature_layer_0} ; Start heating the bed, wait until target temperature reached
M109 S{material_print_temperature_layer_0} ; Finish heating the nozzle
1
I figured this out and I'm putting this answer in every forum I've found for this topic as none of the solutions I've seen in them were the solution that fixed my problem.
Cura was starting at the right temp but as soon as it started printing, it dropped the temp to 175. For my issue, it was related to the specific material I had chosen. In settings under Materials, check the material(s) you have selected for your print. On the Print Settings tab, there is a standby temperature. Changing that to the actual print temperature fixed this for my situation. I may be late with this but hopefully it helps you or someone else searching for this problem.
On 1/26/2023 at 2:26 PM, torstrick said:I may be late with this but hopefully it helps you or someone else searching for this problem.
Better late than never. I believe this is the answer to those facing this issue. I will say this only started when I recently decided to update my Cura to 5.3.1. I was previously on 4.x.x. (cant recall). Thank you!
I have a similar problem with the new Cura 5.6, I do a preheat to 250° for PETG and it heats fine but when I hit print it drops the extruder temperature to 140° and stays there, (not melting filament at that temperature).
I am using this on a brand new Elegoo Neptune 4 Pro which has printed flawlessly with the Elegoo version of Cura that came with it but switched because everyone says the 5.1 is better.
I switched back to the Elegoo Cura for the same print and everything worked fine and the temperature stayed where it was supposed to. I didn't need any custom settings to get the new Cura to see the Neptune, everything looked great!
Any ideas?
Edited by tefoss
What printer definition file did you use to install the printer in Cura? There is a good chance that the problem is in the StartUp gcode.
Have you looked into the gcode to see where the command is that is telling the printer to go to 140?
Thanks for the quick response, Cura automatically found my printer on the network and installed it itself.
I don't know the code but the only 140 I see is three lines down, M104 S140, is that the line that tells the printer to go to 140°?
I have a print going now trying in Elegoo Cura to print a PETG Raspberry Pi case. I can try again in Cura 5.6 as soon as the print finishes or fails...
M220 S100
M221 S100
M104 S140
M190 S{material_bed_temperature_layer_0}
G90
G28
G1 Z10 F300
G1 X67.5 Y0 F6000
G1 Z0 F300
M109 S{material_print_temperature_layer_0}
G92 E0
G1 X67.5 Y0 Z0.4 F300
G1 X167.5 E30 F400
G1 Z0.6 F120.0
G1 X162.5 F3000
That code is more suitable to a printer with ABL, but there are no ABL codes (G29 or M420).
You are pre-heating the nozzle. When the print starts the "M104 S140" line is setting the hot end to 140. With an ABL system that would be nice so the nozzle doesn't drool on the bed as the ABL does it's thing. You don't want that if you are manually leveling the bed.
After auto-homing (G28), the "M109 S{material_print_temperature_layer_0}" line should set the hot end back to the Initial Layer Print Temperature. "M109 S" means "set the hot end temp and wait for it to be reached". Even though the temperature is dropping to 140 during the startup, that Startup gcode should work.
If you are manually leveling I think this would be more suitable. It will work whether you are pre-heating or not. I suggest that you install another instance of your printer in Cura and test this startup gcode.
;-------------StartUp
M220 S100 ;Reset feed rate to 100%
M221 S100 ;Reset flow rate to 100%
G21 ;Metric Units
G90 ;Absolute movement
M82 ;Absolute extrusion
M140 S{material_bed_temperature_layer_0} ;Start the bed heater
M104 S{material_print_temperature_layer_0} ;Start the hot end heater
G28 ;Auto-Home
G92 E0 ;Reset extruder
G1 F{speed_z_hop * 60} Z10 ;Move up
M190 S{material_bed_temperature_layer_0} ;Wait for the bed temperature
M109 S{material_print_temperature_layer_0} ;Wait for the hot end temperature
M300 P250 ;Short beep
G1 F{speed_travel * 60} X10 Y0 ;Move to purge start
G1 F{speed_z_hop * 60} Z0.3 ;Move to purge height
G1 F{speed_print * 40} X160 Y0 E30 ;150mm Purge line at 2/3 print speed
G1 F{retraction_retract_speed * 60} E28 ;Short retraction
G1 F{speed_z_hop * 60} Z0.4 ;Move up a little
G1 F{speed_travel * 60} X150 Y0 ;Wipe the nozzle
G92 E0 ;Reset the extruder
;-------------End of StartUp
Since you are pre-heating (to level I presume) you could do without the M190 and M109 lines. Each of them can cause a 10 second delay as the printer decides if the temperature has been reached. They are there as a safety to insure that the bed and hot end are up to temperature before any extrusions.
The Marlin commands are HERE. I suggest you look up the ones that appear in your Startup so you understand what they are telling the printer to do.
The Cura keywords are HERE. Cura Keywords must be enclosed in curly brackets. The "speed" words are " * 60" because Cura uses mm/second but gcode uses mm/minute.
Found this problem, there is a sensor on the extruder assembly that determines how high the nozzle is from the build plate and this was off center, not screwed in tight from the factory. I realigned this sensor and now it is leveling again without driving the nozzle through the build plate.
I have a similar problem.
3D printer
Anycubic Kobra – I’ve had this printer for several years. No issues.
Cura
4.13.1 – Started with this version. Did one successful print. Started the second print which started the print like normal. It later failed with a mess of plastic. It looked like the nozzle wasn’t hot enough.
5.7.1 – Upgraded to this version to see if it fixed it. Behaves the same as 4.13.1
Tried a bunch of different scenarios and determined I can do a preheat to 200C. No problem. Then, execute the auto leveling procedure on the printer which pre-heats to 120C. Attempt to start the print but the preheat never changes from 120C.
Can’t figure out what changed from the first print. I tried reprinting the first one again. Has the same problem.
All the verbiage is fine but what the printer is seeing is the gcode generated by Cura.
Post a gcode that failed, and use the Cura "File | Save Project" command and post the project file here. Between the two of them there should be a clue as to what is going on.
Both files attached.
Thanks
Boat pylon top test pillar diam-Cura gcode.gcode Boat pylon top test pillar diam-Cura project.3mf
A little background:
The printer definition files come from either a manufacturer, or from an owner of a particular printer. UltiMaker will accept a request to add a printer, or to alter an existing printer definition, but other than checking spelling and syntax, UM doesn't have any way to check on whether the definition submittal is actually right or not. One of the things that is contained in the definition file is the StartUp Gcode that preps the machine for the print and the Ending Gcode that shuts the machine down when the print ends. There are a couple of errors in both your StartUp and Ending Gcodes, and then there is the temperature problem.
Within your StartUp Gcode, the last line is "G5". Since nothing else is calling for bed leveling then "G5" might be an AnyCubic specific bed leveling command. If it is, then it's possible that the macro the firmware runs in response to G5 is setting the Hot End Temperature lower (120). Since it is the last line in the StartUp, the temperature stays at whatever the firmware set it to.
When you open the project file below, it will over-write both your current StartUp Gcode and the Ending Gcode with the changes I've made.
If "G5" is indeed the call for Auto Leveling then the new StartUp Gcode has a temperature line after the G5. I made a couple of other changes as well. The new StartUp has Cura variable names in it but it will look like this in a gcode file.
;----------------------StartUp Gcode
G21 ; metric values
G90 ; absolute positioning
M82 ; absolute extrusion
M107 ; fan off
M220 S100 ; reset the feed rate
M221 S100 ; reset the flow rate
M104 S120 ; pre-heat the hot end
M190 S60 ; Set the bed temp and wait
G28 X0 Y0 ; Auto Home the X/Y axes
G28 Z0 ; Auto Home the Z axis
G1 F3600 Z15 ; move the nozzle up
G92 E0 ; zero the extruder
G1 F200 E3 ; extrude 3mm of filament
G92 E0 ; zero the extruder
G5 ; Auto-Level?
G0 F3600 Z5 ; move up
G0 X0 Y0 ; move to the left front
M109 S200 ; Set the hot end temp and wait
M117 Printing... ; message to LCD
;-----------------------End of StartUp
If you don't like what I've done then you can open that project file you posted and the StartUp and Endings will revert to your original code. If you just want to touch something up go to "Manage Printers" and then "Machine Settings" and the StartUp and Ending will be there.
GV Boat pylon top test pillar diam.3mf
Edited by GregValiant17 minutes ago, GregValiant said:Within your StartUp Gcode, the last line is "G5". Since nothing else is calling for bed leveling then "G5" might be an AnyCubic specific bed leveling command.
Not even the RepRap Wiki's gcode reference (which covers multiple flavours, including what flavours support what commands) mentions a G5. For all I know, could just be a typo and result in a no-op.
33 minutes ago, GregValiant said:UltiMaker will accept a request to add a printer, or to alter an existing printer definition, but other than checking spelling and syntax, UM doesn't have any way to check on whether the definition submittal is actually right or not.
They are working on improved tools to test submitted definitions, but even then there's only so much theoretical testing you can do.
GV,
Thanks for the info.
I haven't looked at gcode before until the last few days trying to figure this out. AnyCubic requires a manual process to says to go through an auto leveling process. I do it by clicking through a few menus on the machine's LCD. There is also another process I do as a user to manually set the nozzle height. Then, I click print on Cura. The AnyCubic Kobra sets the nozzle temp to 120C during auto leveling.
Anyway, I opened the file you sent. I selected the "Open as Project" option. Still won't print. Behaves exactly the same.
Why did it print successfully the first time? It was a different file but the only difference in the files is the diameters.
What would you do next?
Thanks,
Dave
"Then, I click print on Cura."
So you are not printing from the SD card. Are you printing over the USB or is Octoprint or some other app in between?
If you can print via an SD card then load the gcode to a card and print it that way. Bypass everything except the printer.
Edited by GregValiantYes, printing over USB.
I don't have a SD card. I ordered one which will be here in a few days. Then, I'll try the SD.
Printing apps like Octoprint and Klipper can have macros that will run when they see certain commands come through. Cura can send a gcode over the USB but does not make any changes to it, it just sends the file line-by-line.
The SD card is simple and is the way the printers (most of them) were designed to print. You need to try that and see if there is a change in the behavior. That StartUp Gcode I posted earlier should work and if it isn't, then it's getting changed on it's way to the printer. You need to isolate where that is happening. Once you do, then it can be fixed.
Right now the problem might be in the printer. The SD card will tell for sure.
Edited by GregValiant
The SD card works.
Don't know what changed with the USB. I've used it many times. I will work with Anycubic.
Thanks for the help
On 1/13/2024 at 4:19 AM, tefoss said:I have a similar problem with the new Cura 5.6, I do a preheat to 250° for PETG and it heats fine but when I hit print it drops the extruder temperature to 140° and stays there, (not melting filament at that temperature).
I am using this on a brand new Elegoo Neptune 4 Pro which has printed flawlessly with the Elegoo version of Cura that came with it but switched because everyone says the 5.1 is better.
I switched back to the Elegoo Cura for the same print and everything worked fine and the temperature stayed where it was supposed to. I didn't need any custom settings to get the new Cura to see the Neptune, everything looked great!
Any ideas?
Same T_T
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ArunC posted a topic in UltiMaker 3D printers,
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gr5 2,265
@xphillyboy it works fine for most people. Something is wrong. What kind of printer are you using and what did you select for your machine profile?
Actually - just post your project file. That will answer my question and also show what profile and settings you are using and show us your model as well. To do this go to "file" "save project..." and post that file here.
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