hey all
just a quick report i want to make about the AMS
i got no idea why it suddenly start to do that, but as i test different brands all the time so i use also different spools
so this time i was using Winkle Cotton Candy spool and that one is failing
for some reason when i use that specific spool the AMS trows out a “possible Tanlge error” , or a error that the assist motor is overheating
i printed some other spools before , so i swapped from location 4 to location 2 ( as i use 1 and 2 the most ) and got the same error
it seems that the spool itself is a bit more heavy then 1.3 kg
if i put it on the back it works fine , so it is possible that the “pull force” of the AMS motors is not strong enough to pull a spool that weight around 1.3 kg ? to enable “tangled” detection ?
Greetins from PowerChaos
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I had these issues to try using my AMS buffer Adapter that’s posted here and see if that helps out!
You may find this helpful.
It was created to help with specifically this kind of issue.
It’s important to remember that the motor has to deal with both the forces to pull the filament, but also to push it (for which there is quite significant resistance).
Mods like the Y adapter for rear feeding will likely make this resistance worse so bear that in mind if you’ve got anything like that installed.
@ktothestank
why would a adapter solve this ? unless it can decrease friction
as @mowcius points out it is most likely friction related
i use a unmodded bambu X1C and so far it is only 1 certain spool that cause this
my other brands i use are just fine, even other spools of same brand
only difference is that this specific spool is just more heavy then the other spools ( also 1KG filament , but spool itself is more heavy )
it prints fine for some time , then it trows the warning and then it refuse to print , then it prints and then it refuse to print , so something is triggering it
and this just made me wonder if it was the extra weight of the spool , as there was a update that “improved” those detections so i just wonder maybe they are just a tiny bit to tight
probably if i put the spool back in now after i printed a bit it will work fine, but dit not test it yet for now
also the error only triggers on the “pull” action , so when it is printing it triggers the error and it does not trigger when retracting ( or when chaning color ) , so this make me point even more to the weight of the spool
anyway , tomorow i will test if it still does it now i printed a few parts and only got half a spool left 
The AMS buffer adapter @ktothestank posted should also reduce friction, changing the surface the filament rubs against from the (often worn) filament feed horn into a bit of PTFE.
I suspect that any and all mods designed to reduce friction in the filament’s path from the AMS will be useful.
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