Extrusion stops mid-printing
Hi,
I have a brand new Prusa Core One kit that I assembled myself.
Unfortunately, after a few successful prints, I’m now unable to complete any jobs — it always stops extruding filament after about an hour of printing. The nozzle and bed temperatures appear to be good and stable. The chamber temperature is slightly higher (around 26–28°C), but also quite stable.
Do you have any suggestions on what might be causing this and how to fix it?
I am using standard PLA Prusament.
Overall, I have to say that I'm quite disappointed with this new printer so far. I used a Mini+ for many years without major issues, but with the Core One, I've been facing numerous problems since I built it - clogging, bed leveling, LCD display blinking...
RE: Extrusion stops mid-printing
I know it has been a while, but have you found a solution?
I have the same issue and I'm out of ideas on how to fix it.
Filament type doesn't matter. I've had it happen with PLA, PETG, and ASA.
I've tried new hot-ends, tore apart the extruder multiple times, and
tried various parts from Printables that users thought would fix the problem.
I've wasted too much filament due to this issue, and the Core One is
has become more of a source of frustration than an enjoyable tool.
Hi,
I have a brand new Prusa Core One kit that I assembled myself.
Unfortunately, after a few successful prints, I’m now unable to complete any jobs — it always stops extruding filament after about an hour of printing. The nozzle and bed temperatures appear to be good and stable. The chamber temperature is slightly higher (around 26–28°C), but also quite stable.
Do you have any suggestions on what might be causing this and how to fix it?
I am using standard PLA Prusament.
Overall, I have to say that I'm quite disappointed with this new printer so far. I used a Mini+ for many years without major issues, but with the Core One, I've been facing numerous problems since I built it - clogging, bed leveling, LCD display blinking...
RE: Extrusion stops mid-printing
I know it has been a while, but have you found a solution?
I have the same issue and I'm out of ideas on how to fix it.
Filament type doesn't matter. I've had it happen with PLA, PETG, and ASA.
I've tried new hot-ends, tore apart the extruder multiple times, and
tried various parts from Printables that users thought would fix the problem.
I've wasted too much filament due to this issue, and the Core One is
has become more of a source of frustration than an enjoyable tool.
What kind of Core One? Is it factory assembled or a kit? This specific issue could be caused by heat creep. Or Nextruder gear alignment. Or an issue with the idler tension screws. My advice is to start a chat session with support.
RE: Extrusion stops mid-printing
I bought a kit and assebled it myself. Looking back, I would definitely buy an assebled version - the endless hours I have spent on the assembly was not worth the money 😀
How my issue above got resolved? I have took the whole print head and Nextruder into pieces and reassebled again. Something must have gone wrong during my original assembly - not sure what exaxtly, maybe a missing washer?
Since then, I am printing w/o any errors.
RE: Extrusion stops mid-printing
Since this came up in Google while I was trying to troubleshoot the same problem, I will just add my experience here.
It turned out it was heat creep for me, where heat from the nozzle works its way up and makes the filament too soft for the extruder to push through. The extruder starts making a loud clicking noise when this happens which I think is the tell-tale sign of heat creep. Another sign is also that prints always start fine, and only stop extruding after some amount of time. But by the time you restart the print everything has cooled down and it seems to work fine for a little while longer before the problem returns. This means it can't be a blocked nozzle because that wouldn't reliably clear itself between every print.
In my case just printing with the door open was enough to fix the problem.
I also went into the UI settings and under Footer I added the heatbreak temperature to the display. This allowed me to keep an eye on how hot things were getting closer to the extruder, and after a few test prints I found that just before the heatbreak reached 45 degrees that's when extrusion would fail with PLA. I haven't tried other filaments yet.
So now I just keep an eye on that temperature and make sure it stays below 44 degrees and my PLA prints since then have completed without incident.
RE: Extrusion stops mid-printing
Since this came up in Google while I was trying to troubleshoot the same problem, I will just add my experience here.
It turned out it was heat creep for me, where heat from the nozzle works its way up and makes the filament too soft for the extruder to push through. The extruder starts making a loud clicking noise when this happens which I think is the tell-tale sign of heat creep. Another sign is also that prints always start fine, and only stop extruding after some amount of time. But by the time you restart the print everything has cooled down and it seems to work fine for a little while longer before the problem returns. This means it can't be a blocked nozzle because that wouldn't reliably clear itself between every print.
In my case just printing with the door open was enough to fix the problem.
I also went into the UI settings and under Footer I added the heatbreak temperature to the display. This allowed me to keep an eye on how hot things were getting closer to the extruder, and after a few test prints I found that just before the heatbreak reached 45 degrees that's when extrusion would fail with PLA. I haven't tried other filaments yet.
So now I just keep an eye on that temperature and make sure it stays below 44 degrees and my PLA prints since then have completed without incident.
You shouldn't have any problems if the top vent is open, otherwise you can just print PLA with the door open as well.