Filament tangling can occur when the spool gets caught on something or when the filament itself becomes twisted. To prevent this from happening, here are a few things you can try:
Ensure that the filament spool is able to rotate freely on the spool holder without any obstructions.
Check that the filament is unwinding smoothly from the spool and not getting caught on anything.
Make sure the filament isn’t tangled or knotted before feeding it into the printer.
Adjust the tension on the filament spool holder to prevent it from spinning too freely and causing tangles.
Here’s a guide on how to load and unload filament:
How to Load and Unload 3D Printer Filament (and prevent tangles!) - Maker’s Muse
This could also be an issue if you are using refills and installing them into a spool incorrectly. Swapping new filament on the Bambu Lab spools
When loading a new spool you need to be careful to not let go of the end after you remove it from the side of the spool and are loading it into the AMS. This way it can’t loop under itself. By taking these precautions, you may be able to prevent filament tangling and avoid interruptions during your prints.
After having spent a year fighting AMS issues I went to a radical solution. I had filament jump off the spool during jerky movement, jams in ptfe, breaks, overheating, retraction issues, buffer issues, many times. The insanity of design choices made it all the more frustrating. What are they thinking a ptfe tube that will need to be replaced that you require a tool they didn’t make of design or provide? Cray cray.
I converted the whole thing to a Python. It has been rock solid since. It is a superior design, accepts most spools at any weight. I have run 10 kg and a handful of odds and ends.
I found it a simple build, easily printed and fit finish is excellent. Humebeam has a sterling reputation, the python ams enclosure if you go all the way like I choose to demonstrates this.
I strongly dislike modding printers, this and the riser for the Bambu improved the experience. Adding the E3D x nozzle transformed it. With the python and changes to the printer it is fast and reliable finally.
I would recommend the python ams if you have any AMS issues. The massive bonus is you can return to using recycled cardboard spools or laser cut spools and trial spools with zero problems. It doesn’t sacrifice any usability. The new version anyway. Soon an update should be available for 5kg spools too. It is well worth doing.
It’s a base difference, the spool is driven by gears rather than friction. The spool no longer touches the rollers so weight and composition doesn’t matter. I am using a few 200 hmm 4 inch spools today. No issues that is impossible with stock.
