Hello,
I received my P1S and AMS combo yesterday. After a handful of small prints, the AMS cannot retract the filament from the toolhead. I am unsure what to do as the filament is stuck all the way in the toolhead. Isn’t there a mechanism that cuts the filament in the toolhead, what is it stuck on? The issue does not seem to stem from the spool failing to turn. I take it I will have to remove the toolhead’s bowden tube, snip the filament, disassemble the toolhead, and remove the filament from it to clear up this issue? Is there another way?
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So if the spool is turning and the filament is still stuck, I am wondering if the filament is broken at the print head? If so, then just open the front cover of the print head, remove the PTFE tube and you should be able to remove the filament.
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Try to excange the cutter, i think it will fix further problems with filament stuck in the extruder. Bambu lab recommends to exchange the Filamentcutter after 5 Kg Filament or after 2 Kg of abresive Filaments like CF
I’m also having the same problem on a brand new P1S with AMS, opened support ticket and submitted logs and videos. After a couple of suggestions support said they sent logs to R&D team to investigate, been a few days now.
In the mean time I found that just pulling the tube attached to the filament buffer where the spring is and then resuming the print helps. Of course this is annoying because you need to be around while printer is changing filament.
UPDATE: Hello, I was able to get the filament unstuck doing this a few times. I have looked into some solutions for getting non-bambulabs filament rolls to work with AMS and printed a few different adapter/weight combos. It appears my issues have partially to do with non-Bambulabs filament rolls. I have not had issues with Bambulabs filament yet. Currently, I am still having issues with filament getting stuck in the AMS, right now it is stuck somewhere else before the toolhead. I have been doing short single-color prints so far testing different filament brands and slots in the AMS.
Glad that this worked for you.
Regarding AMS/spool combinations, this google docs spreadsheet might help:
Keep printing and trying!
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The filament is stuck again. This time not at the toolhead . . . any suggestions on how to get it unstuck?
Where is it stuck? Weird that you keep getting jams. If you’d like, maybe start with your single coloured prints without the AMS and send the filament directly to the X1C first?
I’m trying to figure that out myself . . . I cannot tell if it is getting stuck in the filament buffer or in the ams. I released the tube from the back of the ams system and at the toolhead then cut the filament at the back of the ams. After that, I was able to push the cut filament through to the end that goes to the toolhead with no resistance (so maybe the culprit is not in that section?). I pulled the ams apart and gave everything a lookover (looked good, no damage to ptfe tubes or anything else) though I didn’t want to take everything apart. Once I cut the filament, I was able to coil it back on the spool with mild force. It seems like it keeps getting stuck on something but I have no idea what. As for your suggestion I might give it a try but I really want it to run exclusively with the ams even for single-color prints. The spool holder on the back is pretty hard to get to thanks to where I have the printer positioned. I prefer to use the ams to make my life easier.
Could it be the filament or slot (#3 slot) of the AMS? This filament is a heavy glitter pla, maybe it is causing too much friction in the AMS? This stuff prints pretty well on my p1p though it can have bed adhesion issues.
edit: loaded slot 3 with bambulabs filament and loaded/unloaded. Failed to unload on first try, the same issue as the other filament. Cut the filament at the back of the ams, seemed to be stuck in the filament buffer. After some wiggling it came loose. I haven’t had any issues with slots 1 and 2. Haven’t gotten to slot 4. Maybe this is only an issue with slot 3.
Sounds like that filament is old and too brittle.
For clogs, just take things apart and remove the broken filament if you can’t remove a tube and push it through. When things get stuck on the head, it’s usually easiest to just take it apart and clean things out. Using old and/or brittle filament with the AMS is a bad idea.
I also have this problem. Printed all upgrade mods to fix the problem but still no luck. My sunlu matte filament is not retracting after the print. It is just stuck and can’t get retracted. Once I remove the ptfe tube from any tube connector the ams can retract it and it works.
Anyone know any new information? Really kills the fun in printing with the AMS.
First thing I would do is dry your filament. That is the leading cause for brittle filament. You can push the filament thru the tube from the AMS if you disconnect from the back. Then you can disconnect on top of the print head and push thru there from the back and then clear the head.
This fixed my issue first try. Thank You.
Glad to be of help! Welcome to the forums monirainbows! (=
I know this has been awhile since anyone posted to this thread but, I’m having a similar issue with the toolhead. The filament seems to be locked in the toolhead. I disconnected the hotend and no filament was attached. Disconnected from the AMS by cutting the filament just outside the printer. Filament retracted to the spool no problem. Pulled on filament stuck inside toolhead, wouldn’t move. Followed your advice and removed the tube from the toolhead, pulled the filament back to the toolhead and pulled up on the filament. Will not come out. Moved slightly up and then stopped. I can push it down and it moves down the same amount and stops. I’m afraid to pull to hard, I don’t want to break and teeth or anything in the toolhead. Should I just pull really hard? Thank you for your time.
NVM. Removed the toolhead gear assembly from the toolhead and managed to get it moving by pushing the large plastic gear around till it moved passed a kink in the filament. Then the rest just slipped out.
Just bought, received our brand new Bambu Lab P1S 3D Printer. First time trying to ad PLA filament in one of the 4 slots in the AMS trunk it failed (all other 3 slots are working fine). It failed by the red light start blinking at this specific toolhead. So now the PLA filament is totally jammed (stuck in the input toolhead were to put the filament into) and we can not at all get it out again (both ways). I do not think it would help to take the AMS box apart because the problem seems to be located in the mechanic gear or somewhere in this part of the AMS sloth. The bottom to press when inserting the filament is VERY hard to press and not at all smooth to press like the 3 other bottom sloths. Anyone have experienced the same issue and do anyone have a solution how pull out the filament without breaking the bottom or anything in the mechanical gear? I am absolute 3D print beginner and it’s my sons Christmas gift so he is very sad at the movement. Please help me with a solution how to fix this problem, as we think something is broken or the gear is not working (it is very hard to pull the tap at the hole, so something must be broken). We have google and YouTube search a lot without finding a solution to this problem so we assume that the product is broken somehow. Thanks in advance.