Several times now my filament has gotten entangled, chocking off the feeding of it. Besides getting an AMS, what can be done? It seems lined up fine when it starts.
What filament brand are you buying? That’s not an issue with a printer or needing an AMS, neither of those will fix it. Your filament is spooled improperly.
It is made by Mika3d, a wood filament
Just do this. 
Hole punch and kids cereal box make your own unlimited. 
I haven’t gotten a tangle in umm. I can’t remember since the 3mm days. Unless they spooled it drunk.
It works stupidly because the cardboard edge pushes on the “loop” so it literally can’t cross over onto itself* and tangle. Watch the machine pull filament you’ll see what I mean 
I can’t quite make-out where the cereal box and hole punch are sitting, feeding the filament through.
I’m drunk right now hilariously, so can’t quite make out of that was sarcasm 
But I’ll play along. The filament can’t tangle when it can’t physically cross over. Just toss a stupid cardboard on it and be tangle free 4 life 
All it does is when the spool winds it accidentally gets stuck flat and aligns everything.
Note, this was discovered again, accidentally, decades back hehe. Sometimes the simplest things.
Will try. Does the cardboard move around?
yeah it moves. just cut a little square, put a hole in it and stick it on the roll before feeding it into the tube. it does its own thing really. But as you see in the picture as the roll spins it “flattens” onto it naturally and stops tangles as the filament can’t cross over onto itself.
I know it sounds stupid but it works.
Some expensive rolls actually come with one of these already in a diamond shape with a tiny hole you are supposed to add - I lose those all the time so i just make my own , same thing.
hope this helps a bit
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