I’m having an issue where mid print the filament gets a little deformed in the extruder and prevents the filament from either extruding or unloading. I get an error message saying that the AMS was unable to pull back the filament and it is very stuck in there. I usually have to take the extruder off in order to clear the filament. This is happening with almost every print now.
This is on a 1 month old P1S. I also have an X1C and four P1Ps and I’ve never had this happen in over a year of printing with the other printers (same print temps). I’ve taken the extruder apart and cleaned to make sure that there’s no little bits in there.
Any suggestions?
I’ve had this happen to me while printing pla when the chamber temp got too high. I open the door when printing pla and haven’t had a problem since.
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Thanks, I’ll keep an eye on the chamber temp. Related question, how do you adjust the speed of the exhaust fan in the slicer (Orca slicer)? When I print it is set at 70% and I can manually increase it, but I’m not sure how to increase it in the slicer.
The fan speed is controlled by the slicer with the variable “during_print_exhaust_fan_speed_num[current_extruder]” (which is found in the “Filament settings” / “Advanced”) but I haven’t found there in either slicer this variable is actually controlled.
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In orca slicer 1.8.1 there is an exhaust option in the cooling section of the filament specifications, in my previous 1.7 orca slicer this wasn’t there. I use it with a qidi Xplus-3 and it works but of it works with bambu machines i don’t know.
I’ve determined that the chamber temperature is not the culprit here. Furthermore, my X1C chamber is running at least 6C hotter than the problematic P1S, and I’ve never had this issue on the X1C.
I updated to Orcaslicer 1.8.1 and changed the exhaust fan setting to 30% in Filament/Cooling but the fan still remained at the default 70% during printing.
What material? Speeds? What temps your using?
Try turn your print temp up.
PETG, 260C, 80C. These are the temps I’ve been using for a long time without issues.
Thinking that the chamber was getting too warm, I removed the exhaust fan muffler I had put on and also took out the activated charcoal filter. Since then I haven’t had any problems. But the weird thing is that as far as I can tell the chamber temperature has stayed the same, maybe just 1C cooler.
Your printing on the highest end of petg temp. Your getting heat creep thats softening the filament in the heatbreak and just before it. The filament is deforming on retractions. Lower your petg to 240 and I bet you’ll be good to go.
I just experienced the same thing. Printing in PLA. The print started and then I noticed that by the 10th layer- it wasn’t printing but I didn’t get an error that there was an issue. I stopped the print. When I went to unload the filament- it was stuck. I finally got it loose, but now I can’t get it out of the AMS start point. (sorry- not sure what to call it) It isn’t recognizing that there is filament in there and now I can’t push it the other way either…
I had your exact issue yesterday. In my case, it was the sensors being dirty within the extruder assembly. Cleaning them made the AMS spin to life after I booted it again and I started a new print.