I’ve heard of some Heat Creep being an issue on their wiki. The Filament I’ve used was very dry (dried it for 12h). Printer is pretty new with just 2 months old and only 2 Prints with the Bowden.
I’ve been told that this can be a tension issue but it doesn’t seem like we can adjust it at all since there is a spring that is fixed.
The Filament in the gear is stuck. What are my options here besides trying to clean it?
Anyone else had this issue?
To me it looks more like grinded, and seems you have a lot of small particle from the filament inside, so maybe worth to open a ticket and check it with Bambu?
There are some issue reported around the forum which needed replacement of the extruder.
Any chance that the nozzle is a bit clogged? And what are the nozzle size and the filament?
Maybe you can check also if PTFEs on both ends are seated nice and flat. And if nothing there maybe try to do some prints and try to see what happens. Maybe the retraction is not working well, or the spring is too aggressive.
I would expect if you have heat creep going to the extruder wheels the filament inside the PTFE tube and the nozzle should be very soften also.
Do you see any issues with the print quality? And do you have printed different material in the main nozzle at the same time?
After printing with mine from very early purchase, my Bowden is now having lots of feeding issues. I was not afraid of the Bowden idea, actually thought it was some plusses. But Bambu needed to cook this a bit more in my opinion. Probably going to have to replace my feeding unit soon, as it often fails at that part of the path. Right now my is screeching very loudly as it feeds.
P.S. it used to be easy to find the “Community” and the “replacement parts” on Bambu’s site. Interestingly, those have gone away. Takes a Google search to find them now. Hmmmmmm…
are you doing pla support interface via aux extruder? Thats problematic if so. default settings cause massive aux fan output to prevent chamber from heating up due to glass transition temps in bambu slicer. But if you raise the tg for PLA to remedy the aux fan behaviour, you will likely get heat creep and clogs as a result.
Its almost as if one of the main selling points of this machine is actually moot, because using different filament as support fails often because of sht like this.
I did find the spart parts area in the full support site though, but seems you can no longer just purchase parts, but instead you have to submit a ticket to support in order to purchase parts.
It’s funny because the support goes and tells me: That’s not an issue and the Bowden does not has any issues with Heat Creep.
Very weird situation
I’m finding Bambu Support has a list of issues where they seem to purposefully “play dumb” too. They know it’s an issue, but don’t want to fix it so they try to ghost you or push you away by doing useless tasks to get you to get tired of dealing with them. I personally work in a support related industry, so I really don’t blame them too much, but some issues should be handled better than how they are doing now days. We are lucky the community is as strong as it is, and many issues often find work arounds that are often posted here. Fingers crossed this one finds some resolution here.
So, I received it and did a few prints and well… Its the exact same issue with different filament brands (all PLA)
the filament looks squished at one point again. It happens every time at the same position on the filament after unloading it so it must be grinding within the extruder.
I don’t know why you deleted it because it was a good idea!
I used a PTFE tube from the external holder to the aux extruder and the results were “better” (still not good) by bypassing the buffer which seems to be the issue here.
That’s severe under extrusion. Look for any piece of filament between the extruder and the nozzle. Something is retaining the free movement of the fimalent.
