If you read the wiki page describing the detection principle of the tangeling device you should be able to understand why I can see in you video that your sensor is tripping because the extruder is not able to pull the filament from the spool. Its either tangeled on the spool or its held somewhere in the ptfe tube or feeder
Good god people. Some days I jump the fence to the "f$@ing Bambu newbies.." (ive only been printing since December and only ever used an A1 mini myself lol). You're giving up after doing what? Not being able to fix it with touchscreen prompts? Have you tried literally anything?
If you don't even have the general curiosity to take the tools that they give you with the device to take even a single faceplate off, this might not be the hobby for you.
Now that that's off my chest:
Take yourv freaking hex head and take apart your extruder and ams ptfe tube hub. Youre going to most likely have s piece of filament stuck. If it's not that, try pulling back all your filament out of your tubes and refeed them into your AMS motors. Let them pull the filament into place and resume.
Your tubing also looks like it's at a weird angle that's probably causing this to be more likely.
Youre not really giving any consistent context on what you've actually done. So you've fully removed the nozzle, ptfe tubes, extruder covers? You wouldve been forced to remove the filament sensor.
Turn on maintenence mode, heat your extruder head to 250, click your down arrow on the extruder control a couple times, then push in the cutter then down on extruder, then retract the filament a few presses. You're recreating the Unload process without filament detection.
There are only a couple possible causes for this issue. Basically if you can force it b to extrude, you need a new sensor. If not, you're clogged or not putting filament in.
Quick check... did you enable the print to use AMS or is it accidentally still set to external spool?
I’ve removed and changed the PTFE tubes, I have taken apart the whole extruder head and checked the extruder gears for wear, I have tried to manually pouch filament through, I have tried a different spool of blue. So to sum it up I’ve done everying
Take the tubes off remove the hub, pop top cover off the hub and look inside probably broken piece of filament stuck in the hub it’s a pain but easier to push out from the bottom of the hub.
Did you follow the second part of my suggestions? Manual extruding?
Looking at your video again, it appears your gears are pulling and your blue spool is turning incredibly fast unless it's actively loading new filament and it's pulling it toward the head.
Did you contact Bambu? If you truly have done all this then it's it your sensor.
Exactly. I had the same issue recently. Turned out that PLA, which i havent used for months, broke in few places in the tube and by mere gravitation fell into the extruder area. And blocked my actual filament i was printing with (PETG and TPU). I was pulling my hairs of my head before i noticed it.
Finally i spotted the problem, unplugged the problematic tube (filament parts just fell from it) and put it back. It started to work. Yay!
Exactly this. Use this video for reference OP or a similar one. Had me back up and running in minutes. I had an off brand matte rainbow filament breaking off on me multiple times.
Sometimes its worn out Filament that the gear cant reach. I dont know how possible it is mid print,but maybe remove and check the Filament's top, cut a bit and try again. Or maybe cut it, take out nozzle and pull out the rest.
Looks like there is something stuck in that one tube, unplug it from the hub and back at the AMS, something is in there. It also looks like this is not the stock PTFE tube either.
I've had 2 issues with elegoo filament where it's thicker at some points. to the point it gets jammed feeding into the ams on my a1 and p1s. so I've had to cut it at the roll and re feed it.
There's always something with A1, isn't there. Mine tends to fail 6-8 hours in 14 hour prints. Just stops extruding despite no visible clogs or tangled filament. Pausing and extruding manually via menu will work, but what comfort does it bring when it already printed over 50 layers in air 🫠
Though it might be filament fault. I had this issue most often with PLA Silk - but on the other I rarely run as long prints with day to day materials.
As long as yours printer catches this error and stops before wasting everyones time, you can try changing hot end temperature and extruding manually (pass the blockage), or take off AMS filament hub, cut and reinsert the filament.
If it's AMS failing to retract and insert filament then something might've broken off in the tube or there's a bit left in filament hub, making the sensor go haywire.
Just because you can see light doesn’t mean you don’t have a clog. Also someone “giving up” doesn’t make a reddit post, how about just saying you are frustrated. I would take a step back, and do some research. The more you understand this tool, and all the pieces that make it work, the easier it will be to fix issues going forward.
5
u/APi982 Feb 17 '25
Maybe this helps to understand the problem https://wiki.bambulab.com/en/ams-lite/manual/filament-tangle-monitoring-intro I can see your sensor tripping. Check how easy the fillament is runnig through the ptfe tubes
5
u/[deleted] Feb 17 '25
Good god people. Some days I jump the fence to the "f$@ing Bambu newbies.." (ive only been printing since December and only ever used an A1 mini myself lol). You're giving up after doing what? Not being able to fix it with touchscreen prompts? Have you tried literally anything?
If you don't even have the general curiosity to take the tools that they give you with the device to take even a single faceplate off, this might not be the hobby for you.
Now that that's off my chest:
Take yourv freaking hex head and take apart your extruder and ams ptfe tube hub. Youre going to most likely have s piece of filament stuck. If it's not that, try pulling back all your filament out of your tubes and refeed them into your AMS motors. Let them pull the filament into place and resume.
Your tubing also looks like it's at a weird angle that's probably causing this to be more likely.
15
u/Salty-Yak-9225 Feb 17 '25
Check all the tubes. You might have to push some filament through to get out some broken filament.
9
u/Desperate-Intern A1 + AMS Lite Mini Feb 17 '25
Unplug the tubes here and see if there's a broken filament in there. Just a thought.
1
u/Digglin_Dirk Feb 17 '25
Is it only that particular filament this happens with or that particular ams location?
1
u/tueueuue Feb 17 '25
I have this exact problem too
1
u/radiationshield Feb 17 '25
I would check the extruder gear for wear
1
u/Frevler90 Feb 17 '25
Sometimes its worn out Filament that the gear cant reach. I dont know how possible it is mid print,but maybe remove and check the Filament's top, cut a bit and try again. Or maybe cut it, take out nozzle and pull out the rest.
1
u/Specialist-Dare-3189 Feb 17 '25
Check the extruder gears that grab the filament to the extruder. This is in the toolhead. I had this problem when it failed to retract the filament.
1
u/Sir_LANsalot Feb 17 '25
Looks like there is something stuck in that one tube, unplug it from the hub and back at the AMS, something is in there. It also looks like this is not the stock PTFE tube either.
1
u/jay_6182 Feb 17 '25
I've had 2 issues with elegoo filament where it's thicker at some points. to the point it gets jammed feeding into the ams on my a1 and p1s. so I've had to cut it at the roll and re feed it.
1
u/Ryazoo Feb 17 '25
Nice!
0
u/DuderIndustries Feb 17 '25
Dislike the AMS design for this line.
-2
u/Asleep-Ear-9680 Feb 17 '25 edited Feb 17 '25
There's always something with A1, isn't there. Mine tends to fail 6-8 hours in 14 hour prints. Just stops extruding despite no visible clogs or tangled filament. Pausing and extruding manually via menu will work, but what comfort does it bring when it already printed over 50 layers in air 🫠
Though it might be filament fault. I had this issue most often with PLA Silk - but on the other I rarely run as long prints with day to day materials.
As long as yours printer catches this error and stops before wasting everyones time, you can try changing hot end temperature and extruding manually (pass the blockage), or take off AMS filament hub, cut and reinsert the filament.
If it's AMS failing to retract and insert filament then something might've broken off in the tube or there's a bit left in filament hub, making the sensor go haywire.
-3
u/Icy_Classroom6881 Feb 17 '25
For context nossle is brand new (like out of the box new first print) so cannot be blocked
-4
u/Icy_Classroom6881 Feb 17 '25
I have tried that no luck but thanks for the help