The Bambu Lab AMS Problem NOBODY Talks About

Hello, 3D Printing friends! Today is a quick tip to save Future You some trouble with your AMS or AMS Lite.

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CHAPTERS
00:00 Introduction
00:23 The Problem
02:24 The Solution

[michaelm]

This happened to me after 2-3 weeks of not using my printers. Since I travel for work and gone Monday through Friday I do what you do with my filament and wrap it up till I need to use my machine. Nice to know that I'm not the only one to have this happen to. Great Tip.

[ZeroAnkoku]

For the AMS unit for it's enclosure there are plenty of mods/STLs that allow you to add extra desiccant throughout the unit which I use and have never really had a problem. I think the only problem most people will have with this recommendation is making it a habit to check before using lol. Great video and thanks for the content!

[dtaggartofRTD]

I've had this occur in my AMS working with an older spool of PLA. Getting at the internal tubes is an adventure.

[ALL_OUT_NERDDOM]

The simplicity of this issue is insane as to how much of an aggravation it is when it happens. Love this and all your videos!

[brozadude]

I do not own a AMS lite, but for the regular AMS you can clean the tubes without stopping the print.

You just have to be quite careful when disassembling it, remove both screws in the AMS, unplug the PTFE tube that goes out and VERY gentily pull out the piece that holds the 4 spools making sure that you don't unplug the two connectors to the PCB. Then disconnect the PTFE tube and make sure you clean it up, then resume the print.

Of course this is annoying, but at least you don't have to cancel the print...

[Marcus_Caius]

Good tip, thanks! I'm on day 4 with the AMS and I didn't stop printing since :)

[NightStalker]

I've had this happen 3x on my AMS and it was definitely due to not using the printer (for weeks and sometimes months). I started unloading the filament (before I saw this video) after the 3x time it happened and have not run into this issue, since. In my case, the filament would snap inside the AMS tubes. I'd have to unload the AMS, take the AMS apart and then clear the jam...a real PITA!

[rhencullen]

Some brands are definitely more likely to break than others, but I find that some colours of eSun PLA+ are very susceptible to breaking in the AMS Lite if they’re not used for a few days.

In the original AMS I try to make sure that there is plenty of fresh colour changing silica gel on the rear chambers and in boxes between each feeder and that seems to keep the filament in good shape for weeks if not months, (providing the gel is changed regularly as soon as it shows any colour change).

[dia]

Been there and done that. Had to completely take apart the printhead to remove it from the sensor arm. Such a small bit was jammed on sensor. That was the last time I used Bambu PLA-CF brand new from the package without drying for 12 hrs min. Has worked great since.

[TechieSewing]

Irregardless of the amount of jokes in the video, the title doesn't lie :)

[Sergiodj]

Hey Bryan, I did run in to this a few months ago after a a couple weeks of no printing. I did figure it out after it happened twice so I did exactly as your suggesting, cool and informative for all those that haven’t figured it out yet.

[PaulB-justme]

Thanks for the tip! I have only had my A1 Mini for just over 2 weeks, and I don't have the AMS, so I am hoping that I don't have this problem. I am ofter swapping filament, and always put the roll I have removed into a vacuum bag, with dessicant beads, then use a small vacuum pump to remove as much air as possible, to try to avoid moisture getting to the filament. I will now also remember to try breaking the end as a final check too! 👍

[hectormuzquiz]

Yep, it happen to me (AMS), but it happen at above the extruder! And it was a (almost) precision surgery just to remove the broken filament. Great video (I wish I saw this before).

[michaelring]

I literally just had to disassemble my AMS last night. Will definitely be following this advice from now on

[loquacious]

I got caught with this very problem with my AMS light. It happened 5 hours into a 6 hour print and I lost the entire print as I had to stop the print and then try to remove the broken filament from the extruder what a pain!!! I now check my filament regularly but your idea is a great tip thank you.

[armandsvitols]

That's brilliant to mention. I had that problem twice in my X1ns AMS and second one was complete dusaster as small piece of filament snapped in that thing with magnets. Had to disassemble it to get that piece out and spent couple of hours to get magnets back in their slots as I hadn't any good magnet to place on other side. I was close to throw it out of the window and order a new one. And yes I used a roll in AMS slot I didn't use for few weeks and yes my AMS is full of desiccant modules. So I'm checking all a while unused filaments for brittleness before use in AMS

[pennywisdom]

You are so right about those AMS lite connectors not wanting to let go of the tubes at the print head. I had broken a ribbon cable on my A1 trying to get those out to remove a broken piece of filament from the hot end. Luckily the A1 recall happened right after so I just returned it.

[scottmcfadden]

Just watched this video yesterday. Turned on my X1C tonight and heard a snap. In the process of taking the AMS apart now. Should have tried to pull them out first. Thanks for the great info.

[anwyll]

This advice also applies generally to any machine with an extended reverse bowden, just without extra work of managing the AMS connections.

[Wolfdenlab]

Good tip!! I have my AMSs loaded with several containers of reusable desiccant beads. That helps a lot too. Not so easy with the lites.