I’ve had this happen twice in the last month or so - printer says it can’t feed filament and I end up finding that it’s broken off between the feeder and internal hub. I’d blame the filament but this is genuine Bambu filament. Any suggestions as to why this happens?
And a gripe/suggestion - could the AMS internal cables be made just a bit longer, so normal human hands can re-insert them? Even an inch would help! Since it’s too late for that, has anyone made extenders using the appropriate JST connectors? If so, take my money!
Brittle filament can happen with too much moisture in the filament. The water is drawn in and breaks the polymer strands that make up the filament.
One guy here did a kind of weird experiment where he soaked a spool of filament in water. The filament just spontaneously broke into pieces on its own after a couple of days.
And unfortunately it’s apparently permanent. The filament doesn’t “heal” If you dry it back later.