RE: Xl extruder stops
After dealing with similar issues over the past week I'm convinced the issue for most is they have lost preload on their extruder door. I spent this entire week shimming the door for more preload, slowing prints, playing with temperature etc.
It wasn't until I did a cold pull and compared it to another extruders cold pull that I realized the filament was not being fed hard enough. The tip on the cold pull was not well formed compared to the other.
After more digging I found that the rollers in the door had moved as well. So even though it looked like it had some preload, it didn't. The problems I experienced mimicked exactly what people have described. I switched to a different extruder that I haven't used for anything but PLA, and no more issues. I'm even able to print ASA at 200mm/sec. 10 prints in and not a single failure.
The issue is caused by the PETG parts in the extruder getting too hot and deforming. I know some people say their extruder drive gear stops, but did you open the door while the printer is printing aka after it stops extruding reach in and open the door. This might be tricky so be careful as the head will be moving all over. Has anyone confirmed this?
I'm willing to bet most people with this issue have an enclosure.
I'm also willing to bet replacing the extruder door and latch with new PCCF parts would fix their issue.
Let me know your experience.
RE: Xl extruder stops
After dealing with similar issues over the past week I'm convinced the issue for most is they have lost preload on their extruder door. I spent this entire week shimming the door for more preload, slowing prints, playing with temperature etc.
It wasn't until I did a cold pull and compared it to another extruders cold pull that I realized the filament was not being fed hard enough. The tip on the cold pull was not well formed compared to the other.
After more digging I found that the rollers in the door had moved as well. So even though it looked like it had some preload, it didn't. The problems I experienced mimicked exactly what people have described. I switched to a different extruder that I haven't used for anything but PLA, and no more issues. I'm even able to print ASA at 200mm/sec. 10 prints in and not a single failure.
The issue is caused by the PETG parts in the extruder getting too hot and deforming. I know some people say their extruder drive gear stops, but did you open the door while the printer is printing aka after it stops extruding reach in and open the door. This might be tricky so be careful as the head will be moving all over. Has anyone confirmed this?
I'm willing to bet most people with this issue have an enclosure.
I'm also willing to bet replacing the extruder door and latch with new PCCF parts would fix their issue.
Let me know your experience.
Hold on to your bet. Different material parts won't solve the issue.
RE: Xl extruder stops
"I know some people say their extruder drive gear stops, but did you open the door while the printer is printing aka after it stops extruding reach in and open the door. This might be tricky so be careful as the head will be moving all over. Has anyone confirmed this?"
Yes, every single time. Drive gear stops won't start working again until the machine is rebooted. Open the door and confirmed. Also not in an enclosure.
RE: Xl extruder stops
I know some people say their extruder drive gear stops, but did you open the door while the printer is printing aka after it stops extruding reach in and open the door. This might be tricky so be careful as the head will be moving all over. Has anyone confirmed this?
This is what happens to me. I haven't tried opening the extruder door while it's printing, but I have told it to change filament when I notice the issue and opened the door then. The gear does not turn during the unload/load sequence, and if I pull the filament manually or otherwise turn the gear, it is loose like the motor is turned off.
For me the issue has slowly been spreading, T1-T4 all run into it within about an hour, haven't tried T5 as primary since I've been using it for support. This week, I tried a factory reset, it didn't help, but now T1 is completely unusable
RE: Xl extruder stops
After dealing with similar issues over the past week I'm convinced the issue for most is they have lost preload on their extruder door. I spent this entire week shimming the door for more preload, slowing prints, playing with temperature etc.
It wasn't until I did a cold pull and compared it to another extruders cold pull that I realized the filament was not being fed hard enough. The tip on the cold pull was not well formed compared to the other.
After more digging I found that the rollers in the door had moved as well. So even though it looked like it had some preload, it didn't. The problems I experienced mimicked exactly what people have described. I switched to a different extruder that I haven't used for anything but PLA, and no more issues. I'm even able to print ASA at 200mm/sec. 10 prints in and not a single failure.
The issue is caused by the PETG parts in the extruder getting too hot and deforming. I know some people say their extruder drive gear stops, but did you open the door while the printer is printing aka after it stops extruding reach in and open the door. This might be tricky so be careful as the head will be moving all over. Has anyone confirmed this?
I'm willing to bet most people with this issue have an enclosure.
I'm also willing to bet replacing the extruder door and latch with new PCCF parts would fix their issue.
Let me know your experience.
Hold on to your bet. Different material parts won't solve the issue.
It will in my case. My extruder never stopped, it just stopped feeding filament because of poor engagement. In my case it stops extruding at usually the 2nd layer or higher because that when speeds increase. If I pushed in the filament I could get it to start again, but it'd likely stop again soon. If it ran like that for awhile while I wasn't around there would be ground up filament in the extruder gears.
Maybe there's 2 problems going on there, but I'm willing to bet many are just deformed parts. I'm also willing to bet most people with the issue are using an enclosure.
RE: Xl extruder stops
I know some people say their extruder drive gear stops, but did you open the door while the printer is printing aka after it stops extruding reach in and open the door. This might be tricky so be careful as the head will be moving all over. Has anyone confirmed this?
This is what happens to me. I haven't tried opening the extruder door while it's printing, but I have told it to change filament when I notice the issue and opened the door then. The gear does not turn during the unload/load sequence, and if I pull the filament manually or otherwise turn the gear, it is loose like the motor is turned off.
For me the issue has slowly been spreading, T1-T4 all run into it within about an hour, haven't tried T5 as primary since I've been using it for support. This week, I tried a factory reset, it didn't help, but now T1 is completely unusable
Do you have an enclosure? What you describe sounds like no preload on the filament. When it's properly loaded you cannot physically pull the filament out with the door closed.
RE: Xl extruder stops
"I know some people say their extruder drive gear stops, but did you open the door while the printer is printing aka after it stops extruding reach in and open the door. This might be tricky so be careful as the head will be moving all over. Has anyone confirmed this?"
Yes, every single time. Drive gear stops won't start working again until the machine is rebooted. Open the door and confirmed. Also not in an enclosure.
Keep us posted on yours. I know they're sending you new parts.
RE: Xl extruder stops
I know some people say their extruder drive gear stops, but did you open the door while the printer is printing aka after it stops extruding reach in and open the door. This might be tricky so be careful as the head will be moving all over. Has anyone confirmed this?
This is what happens to me. I haven't tried opening the extruder door while it's printing, but I have told it to change filament when I notice the issue and opened the door then. The gear does not turn during the unload/load sequence, and if I pull the filament manually or otherwise turn the gear, it is loose like the motor is turned off.
For me the issue has slowly been spreading, T1-T4 all run into it within about an hour, haven't tried T5 as primary since I've been using it for support. This week, I tried a factory reset, it didn't help, but now T1 is completely unusable
Do another test print and when it stops open the idler door while printing and see if it's turning. If it is, then it's probably what I'm describing, if it's not moving then you've got a different issue.
RE: Xl extruder stops
Do you have an enclosure? What you describe sounds like no preload on the filament. When it's properly loaded you cannot physically pull the filament out with the door closed.
I was pulling the filament out with the extruder door open. I do have an enclosure, but I replaced all the printed parts that are under load with PC-CF some time ago and haven't had an issue with them warping since.
RE: Xl extruder stops
I can confirmed that the extruder motor stops moving and does not move again until you park the tool. I have sent video to Prusa support showing the door open and the extruder not moving while the toolhead was still in motion. The issue with the filament slipping is fixed with the PCCF parts for the idler door and lock. My issue started with adding the enclosure. Currently I am testing an alpha version of the firmware that is supposed to have changes to prevent the extruder from stopping. First two jobs completed without an issue.
RE: Xl extruder stops
I can confirmed that the extruder motor stops moving and does not move again until you park the tool. I have sent video to Prusa support showing the door open and the extruder not moving while the toolhead was still in motion. The issue with the filament slipping is fixed with the PCCF parts for the idler door and lock. My issue started with adding the enclosure. Currently I am testing an alpha version of the firmware that is supposed to have changes to prevent the extruder from stopping. First two jobs completed without an issue.
What firmware version? I've been running 6.2.0 alpha 2, it has greatly improved the USB disconnect issues but hasn't done much for the extruder stopping.
RE: Xl extruder stops
Switching to PCCF will not make a difference. The cause lies in the control (firmware). I have also replaced these PETG parts with PCCF in the enclosure. The extruder still stops in the middle of printing.
RE: Xl extruder stops
Switching to PCCF will not make a difference. The cause lies in the control (firmware). I have also replaced these PETG parts with PCCF in the enclosure. The extruder still stops in the middle of printing.
There are 2 different problems here. Some people with their extruder motor stopping, and some people where it stops extruding because loss of preload on the idler door.
Mine is the latter and 100% had fixed my issue.
RE: Xl extruder stops
Hi guys!
I'll give another update.
My XL stands happily in the basement collecting dust.
After some discussions and very direct conversations, I received information about our extruder problem again. The FW team is still working on a FW that will fix the extruder problem. The reason why this is taking so long is due to disagreements within the company. It is pushed back and forth.
According to my support, who has the information from the meeting on wednesday, the FW should actually arrive by the end of this week. The E-motor problem will also be specifically listed.
We'll see...........
RE: Xl extruder stops
I've also recently been plauged by this issue. Any one of extruders 2-5 will stop extruding on the second layer - not stuck or jammed, the extruder gears stop turning.
I've been in touch with Prusa chat a few times now, I've tried slicing with the fan off, completely rewriting the eprom (hidden advanced reset option) and pulling apart one of my toolheads.
I can say for sure that the complete reset (which meant going through all the setup steps again) didn't solve the issue while slicing with the fan off did seem to work on some occassions. On other ocassions the extruder still failed at layer 2 even with the fans off.
Prusa chat let me know they're still investigating.
RE: Xl extruder stops
Been lurking for a few weeks now hoping to see a solution but I'm having the same issue. Extruder 1 gear stops feeding filament after a few layers. The other 4 work fine but TH1 just stops feeding filament. We swapped the heads and same issue. This is the 2nd printer we have received from prusa as the 1st would never completed the calibration tests. So to see a 2nd failed printer after 3 months of ownership and less than 50 hours of printing is disgusting. It took a month last time of testing and slow replies to get this printer replaced last time, so I didn't want to jump back in with support right away.
We have printed exclusively in PLA, with no enclosure. The LEds on all 5 heads constantly flicker and did on both machines. New flashdrive with 6.1.3 firmware and never seen a USB error.
RE: Xl extruder stops
This is not an Software Issue.
RE: Xl extruder stops
So as mention above using the alpha version of the software does not fix the issue, but should be no surprise since there are no edits in GitHub for this issue listed in the changes for this version of the firmware.
For me I found a work-around when this issue happens.
1) Pause the job
2) Push the very little (hard to get) reset button on the left side front of the nextruder just above the fan. This will reset all the nextruders then wait for them to go back to green status.
3) Resume the print job.
Worked for me, big downside you have to watch the job all the time to catch the stop extruder.
RE: Xl extruder stops
Here is my "temp" solution to the stopping extruder issue.
For me it is a heat issue with the driver of the extruder motor.
1) Remove Prusa enclosure.
2) Removed plastic covers around the extruder electronics board.
3) Since I do not use the part fan I removed the fan shroud and unscrewed the fan and rotated it 180 degrees put the screw back and now the output of the fan points up into the electronics board.
4) Set the fan control in the slicer to be 100% all the time. So each time the extruder is selected the fan runs and blows cooler air over the extruder driver.
Was able to run a 9 hour job without any issues.