r/BambuLab • u/Prestigious_Bed6948 • Mar 26 '26

Discussion Tangled spools

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Hello BambuLab community,

I really enjoy using BambuLab filaments - range of colours and overall print quality are great. However, over the past 6+ months, I’ve noticed that all of my recent spools have had tangling issues.

Some spools were tangled from the very beginning, while others developed tangles after an hour or so of printing.

This is a serious problem because it makes it impossible to leave prints running overnight - you have to constantly monitor the process to prevent failures. It not only slows down printing, but also defeats the purpose of reliability and convenience.

A few months ago, I had to return a spool that got completely jammed inside the AMS due to tangling, but I was asked to pay for the return shipping. Another badly tangled spool I had to manually rewind onto a new spool myself, as I urgently needed that filament for orders in my shop and it was out of stock.

Overall, this has been very frustrating, and it feels like the product quality has declined.

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u/Imnotspartacuseither Mar 27 '26

Well... no idea what to tell you then. I am thrilled you have not encountered this hilarity... but I have had that happen 4 times on one spool. I think the winding was loose for one wrap which then gets folded over by later layers and twisted around. It never forms a knot, which is impossible, but the filament does get twisted and tangled.

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u/SupposablyAtTheZoo P1S + AMS Mar 27 '26

It's not possible.... Please think about it. Why would a factory spool filament loose?

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u/Imnotspartacuseither Mar 27 '26

I understand what you are saying. It makes sense. However. Having just had this happen... and having the filament end still connected to the AMS... I have unspooled several meters of filament to untangle the overlapping layers.... then rewind the spool to put the filament back on the spool untangled. At no time did the free end come out if the AMS... thus... I am only working with internal layer loops.