Just got my X1 Carbon Combo yesterday and there seems to be an issue with the filament loading. Whenever the filament from the AMS gets to the left side of the filament buffer it stops, withdraws the filament, and prompts me to Retry. If I wiggle the tube at the moment it gets to the filament buffer, it will pass through and work properly until it unloads, but it so far has never loaded without me wiggling the tube.
I printed out the Bambu Lab AMS Hub PTFE button from Printables.com and tried several times to remove the tube and reseat it. I checked that my filament buffer spring is not bunched up and the tube and the filament are cut cleanly at 90 degrees.
Otherwise, I printed a scraper and a couple other things successfully, but the AMS won’t be very useful for multiple colors if it can’t load filament without my intervention. Any ideas on how to fix this?
It’s hard to say without seeing pics, but if it stops at the left side of the filament buffer, that’s likely where the issue is. You tried the things I would try.
I’m not sure if the buffer is the issue itself, but I have a few extra filament buffers and I’d be happy to send you one if you want to cover the shipping. I’m using the AMS hub and can’t think of any use I’ll have for them. PM me your address if you’d like one.
Mine does the same thing!! I will get a few GOOD prints, then it comes up with an error message to unload external filament/connect PTFE tube, etc. and I cannot print anymore until I disassemble everything (to find no broken pieces) and then there is a 50/50 chance it will work. (Last print was 6/24.) I am so frustrated, but I am glad to see I am not the only one with this issue. I will keep following to see if something additional is suggested.
Please let me know if this issue was solved… I have the same problem (only started with my first attempt at printing with ASA. I’ve done two months of constant printing with PLA, PETG, PA-SUP, and recently PAHT-CF. First attempt at using ASA and this happened.
Yes, the issue was resolved for me by realigning the filament tubing on the intake side. The tubing was not perfectly centered and so the edge of the filament would hit the edge as it was pushed in, and it would stop hard and then retract every time (on a brand new X1C). I haven’t had any trouble since I reseated the tubing. The other thing you could check is what the end of your ASA filament looks like, maybe cut a fresh end at a slight angle, because if other filament doesn’t have the issue, something about the ASA (maybe it is a tiny bit thicker) filament is catching.
Turns out my issue was a ribbon of melty filament stuck within the buffer. The buffer had also become misaligned… the black plastic ‘rail’ system inside wasn’t allowing a straight path between the input and output. Whichever was the original cause of the issue, it worked again when I reassembled the buffer.
Mine did this too. I figured out that if the tube came in at an angle from below the buffer, the problem stopped. I simply tied string to the middle of the tube and then to a brick. I have not had one problem since then.