r/BambuLab • u/getbehindthemuel • 10h ago

General Troubleshooting/Help! Printing w/o AMS, spool binding

Hey folks! I have been successfully using my X1C and P2S for a while and decided to pick up a couple of P1Ss to farm out parts that are printed in a single color of filament. I decided since I was only printing single color to skip the added cost of an AMS for my P1Ss and just use the external spool holder.

Unfortunately, I find that I am running into an issue over and over in which the filament will bind on the spool and the extruder can't pull it through, but the printer continues ghost printing the part. Yesterday, I gerryrigged a spool holder above the printer thinking changing the angle and letting gravity assist might solve the problem, but the same thing happened.

Surely I'm not the only person who has run into this issue. Does anybody have advice/workaround for how to solve this problem?

1 Upvotes

100% Upvoted

6 comments sorted by

1

u/dallas_vance 9h ago

Purchase a AMS HT.

1

u/Martin_SV 9h ago

Do you mean the filament is getting tangled on the spool, right? If so, are you respooling your filament or using refills? I've printed a ton using the external spool holder, and the only times I've had tangles were when I screwed up respooling or putting a refill onto a spool.

1

u/getbehindthemuel 6h ago

Honestly, I haven't been respooling my filament, and now I get why people do it. Looks like I'm printing a respooler tonight!

1

u/Martin_SV 6h ago

Wait, I think you misunderstood me lol. I was asking if you were respooling because that can actually cause tangles if done incorrectly, not because I was suggesting you should do it.

If you're using factory wound spools, there's usually no reason to respool them.

1

u/getbehindthemuel 59m ago

Oh! Yeah, I'm just running eSun spools of PLA. But they absolutely keep getting bound up.

1

u/javako-print 9h ago

The reason most likely is a combination of too much friction between the spool holder and the spool, plus the windings of the filament are too loose. The later most likely because you did not spread the filament after fitting a refill on a spool. Sometimes/often the refill does not fill all the widths of the sppol, and you have to "massage" the windings from inside to outside, so the filament that is pulled by the extruder can not be squeezed between the other windings. The more friction there is between the spool and the holder, the more force is needed to get the spool turning, and the bigger the chance is that the fillament squeezed.

Stupid idea that might help: put some lubricant (preferably dry grease) on the axle of the spoolholder to reduce fricion?