Hi,
Bambu PLA has been my go to for about a year and the other day I tried my first PETG-HF on a 24-hour print. I wanted to order the filament without the spool but gave it a try even though I had to order it with. Every few hours my AMS would stop because the filament was jammed along the inner edge of the spool. Not only was it inconvenient, it was frustrating because I wouldn’t expect this problem with a Bambu product. I understand Bambu filament may be a little pricey but I’ve convinced myself the quality (and quality control) is worth it. Am I wrong? Even if I’m wrong, I’m still crazy about my Bambu printers.
There have been reports of a number of really bad batches in this regard. From what I read, mainly PLA Matte in conjunction with the inner tape fixation.
In other events, I did occasionally spot my AMS turning the spool slower than the filament was retracted into it, leading to in-print entanglement on the spool. Did you print and install some AMS Savers? They really reduced that occurence for me.
One of the steps when loading a refill spool is to press the filament down to fill the full spool width with filament. If you don’t do that step, or don’t do it adequately you get filament jamming with filament catching between the sides of the filament spool and the bulk filament.
There’s definitely a technique to it and you need to be thorough. Just a little bit of squishing the filament down can still get you jambs.
I’ve had a spool of black PLA that I got a little too warm while drying it and there is a little bit of filament bonding that kept it from mushing down as well and I had it jamb yesterday but it was just not getting the filament squished down properly.
But maybe there’s weird winding issues? I’ve only had this kind of jamming when I haven’t properly pushed the filament down and around when using refill spools.
A respooler might also fix you up if it’s a spooling issue from the factory.
Thanks for the info and I will definitely give it a try. Funny thing - I was printing the base of a spooling machine when it happened.
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Thanks for the info. What do you mean by AMS savers?
Where the filament disappears down the little funnels in the AMS, there are clips that fit right over them and hold pieces of teflon tubing that you can also put end fittings on that keep the pull angle on the filament tangent to the filament wound on the spool. You can find them on MW. Just search for AMS helper/saver or similar.
These are what @MZip was referring to.
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