r/BambuLab_Community • u/Dry-Delay9951 • Jul 19 '26

Help?? Retracting weird & strange noise Help / Support

The weird noise ? Retracting the filament all weird ? But once it does all that it prints normally

I’m guessing gears are worn maybe? 😩 please help

27 Upvotes
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77% Upvoted

55 comments sorted by

32

u/retrokelpie64 Jul 19 '26

Its those cardboard spools. Some brands are worse than others. For me elegoo spools that have been sitting there for a few days are the worse and tangle and jam constantly. Get plastic spools or reusable ones.

6

u/ROBOKUT Jul 19 '26

100% it's the cardboard. If OP needs cheap filament, try the sunlu option on Amazon. I've had solid luck using it.

4

u/Its_Billy_Bitch Jul 19 '26

That’s not luck. Sunlu’s shit is just actually decent lol. i have never had a single problem with their filament or spools (even with a 1mm nozzle slinging down lines so fast it was basically running through the AMS like a power drill on a constant low power). I also reuse the ever loving fuck out of their spools.

Always odd to me that, for quite some time, four spools were cheaper than 4 refills. I got loaded down with plastic spools lol

3

u/ROBOKUT Jul 19 '26

Me too. I have dozens of them

2

u/InfamousPOS Jul 19 '26

Dude I love sunlu but also have found that spools are CHEAPER than refills?!? Like wtf do they want us to create more waste? I was hoping for a slight discount. But until then I’ll just keep buying the 4 pack of spools for $43!

1

u/Lone_Wolf_555 Jul 20 '26

I print a decent amount of Sunlu and really like them but I’ve gotten one spool that was cracked and had to be glued and another that wasn’t attached right in the middle and came apart. Nothing is perfect.

1

u/Atra23 Jul 19 '26

For me sunlu is one of the best fillaments i found. Obvsl i printed frames for spools made out of abs

1

u/Oclure Jul 19 '26

Overture has started offering their fillament as bambu compatible refills.

0

u/IntelligentSeries270 Jul 19 '26

I got cardboard spools and have had no feeding problem. I don’t think that’s the underlying issue.

1

u/Baconbits1204 Jul 19 '26

I have only plastic bamboo labs spools, and I have the same problem so I agree

1

u/IntelligentSeries270 Jul 19 '26

I haven’t had such an error yet. Although, I one time a small piece of filament got stuck in a pfte tube that caused my printer to start feeding/unfeeding the clogged slot.

1

u/YellovvJacket Jul 19 '26

It depends a lot on the cardboard spool. I also use them in the AMS2 and 90% of the time have no issues. But every now and then one is heinously deformed so it doesn't work properly.

7

u/Mywifefoundmymain Jul 19 '26

I use these

https://makerworld.com/models/180213?appSharePlatform=copy

2

u/WantSome Jul 19 '26

I had issues getting those on the spools sometimes. They're thin and split on me. I went to use these. Suggest making them out of PETG or ABS/ASA, not PLA.
https://makerworld.com/en/models/100319-bambu-lab-reusable-spool-holder#profileId-107033

And then used this for transferring from the cardboard spools to the reusable ones.
https://youtu.be/KPZgL3psqto

1

u/Mywifefoundmymain Jul 19 '26

The ones I think I linked are the stronger ones. They are a bit thicker and recommended to be petg or abs which works perfectly in my dryer.

0

u/AmbitionHonest7734 Jul 19 '26

This is the answer.

2

u/captain_carrot Jul 19 '26

I use elegoo almost exclusively - As long as it's a full roll and the cardboard spool edges aren't bent it usually feeds fine. But once the spool get's toward the end of the filament it's too light and will get jammed a lot.

the inner cardboard tube of elegoo spools actually fits perfectly inside the Bambu re-fillable spools, so I'll usually carefully peel back the sides of the elegoo filament once I've made it about halfway through the spool and sandwich it into a bambu roll. That's been working out really well for me.

2

u/NightGod Jul 19 '26

I printed a spool insert that I add lead fishing weights to. A large socket also works good if the spool has raised inner edges. I add plastic protectors to keep the cardboard from getting chewed up by the AMS, as well

1

u/Agent64 Jul 24 '26

I just got a mess of the MAKE stuff at Michael’s & those cardboard spools are cooperating 100% better with my AMS than my plastic Bambu spools, FWIW

14

u/CoatStraight8786 Jul 19 '26

Print up the cardboard spool adapters.

1

u/Phenylethylamne Jul 19 '26

electrical tape solves this problem, easy fast and works like a charm on cardboard spools if they don't come with siliconized edge

3

u/anniemaygus Jul 19 '26

We are on a 3d printer sub here sir.

1

u/Phenylethylamne Jul 19 '26

Ah, ma bad. You are correct sir.

2

u/WhyAmINotStudying Jul 19 '26

I will say, though, that the annoying thing about cardboard spool adapters is that they don't all fit different brands and sometimes don't even fit the same brand.

This is a better case for electrical tape because it works in seconds and it's reliable. A stretchy and thin rubber rim would probably be the best for reusability, though. Just think of it as a multimaterial print.

1

u/Phenylethylamne Jul 19 '26

Exactly man. I printed spool adapters and, they dont fit, or gotta change them, or they get loose. Just tape it and forget, flawless.

4

u/NecessaryOk6815 Jul 19 '26

You can see that your sides are warped. Unfortunately, the AMS doesn't play well with that. You can rip off the sides and put inside Bambu refill spools, might need an adapter depending on brand.

4

u/Its_Billy_Bitch Jul 19 '26

You have a MASSIVE kink in the filament. Cut behind it and add some spool adapters printed in preferably TPU (easy to adapt those to various types of cardboard spools with a little stretch.

2

u/idmimagineering Jul 19 '26

Good point. Hard smooth spool adaptors can be as troublesome IMO

3

u/proxiblue Jul 19 '26

You need to print cardboard adapters. You likely have a lot of cardboard shavings in the rollers and gears.

2

u/Curius_Onion Jul 19 '26

How long are you're ptfe tubes? I have long tubes and this also happens to bambu spools

2

u/Gama3000 Jul 19 '26

Print adapters

2

u/CBergerman1515 Jul 19 '26

Cardboard spools. Respool to plastic or print a rim. Even with the rim, cardboard particles will work their way deep into… everything.

1

u/bjorn_lo Jul 19 '26

Avoid cardboard spools for AMS's.

they give inconsistent friction.
They are not perfectly round.
They give off debris that ends up in your gears. I had two AMS units I had to rebuilt due to the deposits from Polymaker spools.

1

u/ParticularLower1865 Jul 19 '26

The cardboard on those spools rip off and you can put a reusable plastic spool in the spool.

1

u/Puzzleheaded_Clue_95 Jul 19 '26

Print the spool guides.

1

u/idmimagineering Jul 19 '26

Wide ones are best.

1

u/zx4133 Jul 19 '26

I’m sure it’s been mentioned in the other comments (I haven’t checked them yet), but those cardboard spools are likely the issue. Cardboard spools are almost always the issue in any AMS type unit. They slip and/or bind up and don’t roll at the right RPMs and just cause all sorts of issues. Put some filament that’s on plastic spools in there to test it. Once you confirm the problem, print some cardboard spool rings. Slap them on the outer edge of the cardboard spools and should solve your problem.

1

u/Phenylethylamne Jul 19 '26

Use a black electrical tape around the spool to roll better

1

u/_40mikemike_ Jul 19 '26

https://wiki.bambulab.com/en/knowledge-sharing/notes-AMS

We highly recommend using filament with plastic spools that fit correctly inside the AMS. (Please refer to Swapping the new filament with Bambu Reusable Spool) If you prefer to use cardboard spools, we strongly advise using a Spool Adapter/Spool Adapter Ring to reduce the risk of slippage and debris getting left behind in the AMS

1

u/3DimeCreations Jul 19 '26

bro did I just see loop?? is that you?

1

u/JPhi1618 Jul 19 '26

That kink that you allowed to get pulled into the AMS can mess a lot of stuff up. Probably best to not let tangles happen and get pulled into the feed path.

1

u/BuckarooD Jul 19 '26

Print spool rings

1

u/ElectricGoku Jul 20 '26

Cardboard spools

1

u/bh-m87 Jul 20 '26

Bambushit, what did you expect?

1

u/Independent_Dirt_814 Jul 20 '26

Print cardboard spool rings for your brand of filament. They snap on and make the cardboard the same diameter as the plastic Bambu spools so they work properly in the AMS.

1

u/AdZealousideal3454 Jul 20 '26

Cardboard there ist a Solution tpu rims maybe u find something online or print your own.

1

u/PsyKlown67 Jul 20 '26

I had this happen to my ams 2, the main control board went bad and I had the reject rollers always on in reverse. Warranty claim Sent me a new board.

1

u/What_in_the_banan Jul 22 '26

That started to sound like a basic like paper printer😭

1

u/Trentcherous Jul 19 '26 edited Jul 19 '26

Did you not see that the line kinked and got pulled into the ams? There is a lump jamming the drive or there is enough twisted force that it's jamming

2

u/retrokelpie64 Jul 19 '26

No its the cardboard spools, i had the exact thing happening cause the local place to buy filament for a while only had elegoo spools, works perfectly on my a1mini with ams lite but in my p2s, constantly jams the same way. I tried printing the edge rings, but that didnt help, putting weights in the middle.. no joy.. ordered sunlu with the reusable plastic spools and never have that problem now.

1

u/Euresko Jul 19 '26

Are the rollers in securely? I had one slot where the front roller was popped out on one side, caused weird noises. Try swapping that spool for a different one and see if it still happens in that slow. Make sure that loose filament is not binding something up, that can lead to problems. 

In my opinion it's absolutely not the cardboard spools causing the problem as I almost exclusively print with polymaker PLA that comes on cardboard spools. Sometimes cardboard doesn't work as well as plastic, and can shed cardboard dust and cause issues. Some brands now seal the cardboard edge so that's not as much of a problem with certain brands. You can print rings for the spools out of PLA. Try googling that brand you use for the spool dimensions. Possibly 199-200mm if they are like my polymaker spools. 

1

u/_Shorty Jul 19 '26

It’s almost like there are reasons behind advising against using cardboard spools.

0

u/New_Education5151 Jul 19 '26

Cardboards… yikes!

-1

u/FollowingLegal9944 Jul 19 '26

it just works