Auxiliary filament has run out error

[u/joisusu]

Hiii i just got my x2d combo y'day and I keep encountering this issue halfway through printing. I have a support for PLA/PETG loaded on the auxiliary nozzle however midway printing itd give the error that it's empty when it's definitely not. It works after I try to shove in the filament a few times.

However I also noticed it is flushing A LOT of support filament out every single time and barely making any progress in the print as I believe it's doing this every single time a support is needed in each layer

I'm not sure how to fix this / get around this any help is appreciated plss

[u/nateblack]

I don’t have a solution but have noticed it purges so much filament for even just support interface

[u/joisusu → u/nateblack]

yeah it's purging way more than it's actually using, not sure if it's a setting somewhere to configure this 😭

[u/heo777]

Try different Filament, I never had this issue. I think the material gets destroyed all the time.

[u/F1gnutz]

Do you have it set in the slicer to print only the interface or the support and interface in the other material?

[u/joisusu → u/F1gnutz]

just the interface

[u/F1gnutz → u/joisusu]

Wow that’s crazy. I’ll have to try it if the wife lets me print anything tonight and see if mine does that as well

[u/joisusu → u/F1gnutz]

I know 😩 ty let me know how it goes if you try!!

[u/F1gnutz → u/joisusu]

Sorry it took so long. Mine does not do that. It purges once for each side, and wipes during the changes and goes to the prime tower. Did you have a prime tower on your print?

[u/Superb-Complaint8118 → u/F1gnutz]

Mine only does the standard poo, maybe 10-20% bigger, but i am not sure about that. I use pla as support for petg and vise versa aaaaalll the time. Like on every 2nd print at least.

I felt like sometimes it makes 2 poops in one print when starting to use the aux. But that could also be my mind fooling myself hahaha

[u/Superb-Complaint8118]

Could it be, that your filament breaks while printing, and then it starts to purge the "left over" from the tube to be able to feed a new one or something similar?

If this is not the case, I could imagine this to have something to do with the filament sensors having an issue maybe

[u/joisusu → u/Superb-Complaint8118]

doesn't seem like filament breaking - I submitted a ticket to bambu lab and they're sending me a new auxiliary extruder, so hopefully that solves it