I am have an X1C and a P1P. A week ago, I was printing 8 hour prints nonstop for days on end with zero problems.
Now, the printer is consistently failing mid-print with each new print. The problem is the same: filament will stop extruding halfway through a print, but the print head continues to move, causing a buildup of filament in the hotend, often breaking apart from the filament in the extruder. I have done plenty of cold pulls, sometimes removing quite a large amount of blockage from the hotend. I have also disassembled the extruder gears to check for broken filament and dust off any debris. Every time before I start another print, I will heat up the hotend and run some filament through to make sure it comes out the nozzle with no problems. When it looks clear, I try another print, and it will begin with good first layers but fail shortly after again.
Now, even the first layers are poor.
I am exclusively using PLA filament from Fillamentum, with each roll dried for 8 hours (unnecessary, but just making sure it’s not the filament). I’ve also checked the filament thickness with calipers in case the filament was too thick to insert into hotend (it’s happened before). I haven’t seen any warnings regarding a temperature or part failure, but it seems almost like the hotend short circuits, causing the nozzle to lose heat, resulting in an inability to extrude properly and clogging the filament in the hotend.
This is just a guess. Not sure which part to replace, but l’ve replaced at least half of all the logic boards in BOTH machine already due to prior issues.
This is thoroughly frustrating, as I’ve been using the X1C for one year, the P1P for 4 months, and have already come against so many problems. I am using it for my small business, so spending a weekend to troubleshoot only to run into the same problems has made both my printers unusable/completely out of service. I’ve already ordered new hotend parts, thinking maybe there’s just some debris in the nozzles that just won’t clear.
Anyone run into similar issues? What else might the problem be? I have orders to fulfill for my business that’s now backed up because of these problems on both my printers.GIF
Hard to say as so many facts missing. My guess is, that the first layer is too low and too slow. The extruder tries to push but the back pressure makes it too hard to push. So the extruder grinds the filament away and therefore the extruder can not transport the filament any further.
Try a higher first layer and/or faster first layer to lower the back pressure.
After a few months of happy 24/7 printing, my P1P stopped printing near the completion of the first layer or early in the second layer. I’m using a low cost PLA filament so I’ve already dialed back the volumetric speed and adjusted other parameters. At first I thought it was the Extruder being clogged. After taking it apart it became apparent that there was no clog, just a bit of dust. I unclogged the print head with the included needle, often getting a spurt of hot PLA when the pressure was relieved. I unloaded, cut off the end, reloaded the PLA to no effect. I then began to change the Extruder temperature settings, boosting the initial layer print head temp by a few degrees+ for a handful of runs. The problem got worse not better. I tried increasing the bed temperature and the problem also got worse. The initial layer plate temp was set to 75C for improved adhesion. (above the 65C default)
Solution: Reduced the Initial Layer plate temperature to 65-70C. Reduced the initial nozzle temp to 220C. Reduced Volumetric speed from 20 to 12. It’s now working beautifully with this low grade PLA. It’s likely that I can increase the volumetric speed a tad to increase the speed of the prints. I found a good article titled " Extrusion stopped mid-print (Heat creep)" you can google that describes the whole process. I was intrigued by the Extruder Hot End Fan speed note in the article. If the RPM is set too low this can also cause problems. Given that I set this fan speed lower for PLA Silk, I’ll have to be vigilant to set back to its higher value when printing with regular generic PLA.
Just bought my X1C too and I’m dealing with the same issue.
Some prints just stop extruding midprint. Apart from that i’ve had other issues happening randomly.
What I found is that it seems to be related with the cloud service (when you send the slicing directly to printer in Bambu Studio or OrcaSlicer) because if exported to sdcard I have no issues with the prints.
This is my workaround.
It shouldn’t matter if the print is loaded via the cloud or from an SD card as the whole print file is loaded into the printer memory at the time the print starts. It isn’t “drip fed” from cloud.
If the printer continues movement without extruding filament I would look into seeing if you are printing at the right temperature or the quality of your filament.
The “other issues” are, for example, the printer changing filament at a layer where it isn’t supposed to, lower than the expected, and when it goes printing the new filament it tries to print in the correct layer where it is supposed to print.
E.g.: changing at layer 50 (when it should be at 80), when it resumes printing it goes directly to layer 80 with the new filament. I tried 2 times, both this happened.
If exported to sdcard, the exact same slicing, it prints as expected…
This is very odd. Does it do it when you transfer the print via LAN mode? It doesn’t make sense as the P1P prints everything from the SD card, both cloud and SD prints. For the problem to happen on two seperate printers that are completely different chipsets and code bases it again points to something external.
Thinking about this more I would suggest you create a ticket and get support to look at the log files. It sounds like there is a memory problem with your main board.
The kind of issues happening to me are similar if not the same to what other people is pointing out.
Even in this thread there’s one user saying that those issues started after a FW update. So I don’t see how you can simply put aside that this can be caused by software issues more than anything else.
Anyway, I’m creating a ticket to my seller. He is the official representative and authorized reseller of Bambu Lab here.