This issue is driving me crazy. In my case, filament won’t load. It complains about a stuck spool.
I’ve confirmed it’s not the hotend (I have three, .2, .4, and .6 - and both the .4 and .6 behave the same. I can extrude manually as much as I want, but when I do a load or start a print it fails. I’ve tried it with the ams lite (o an a1) and external spool.
I’ve verified the filament path is clear. I can manually push filament through the extruder with the ot end off.
I’ve done old pulls. Switched hotends. It’s a paperweight. Before tonight, it printed fine. I got it on friday and have printed the top mount and a few other pieces. No issues, and then wham.
Creality never gave me this much trouble. The firmware thinks there is a problem and shuts down.
So much for it just works.
Ok, so I completely disassembled the extruder to check for anything broken/jammed/dirty, but found everything looking new and normal. The gears meshed, bearings turned smoothly, filament path was clear and I could put filament down through it normally.
Reassembled it, and although it was creating poop on extrude, it would fail on load or printing with an error of a jammed spool. The spool isn’t jamned - I can spin the spools easily.
I’ve tried it with and without ams lite. I’ve tried multiple nozzles. I’ve tried about 5 different filaments.
It is failing 100% of the time now.
I’m going to take a break, but I should be printing.
Ho do I open a ticket ith bambu anyway?
And… I may have an answer/workaround.
I found it on another thread, but basically I went into settings > ams and turned everything off, then went into settings > printing and there turned off the filament settings.
It worked. No other changes. No nozzle or filament changes.
In my case at least, it must be a firmware glitch that is over detecting
On on my thirrd print, and no issues other than the ptfe tubes getting hung up on the top mounted ams - my error.
Not pleased at the lost of functions but I’m happy I don’t have a $500 paperweight.
But my creality machines are running well also, so not sure what the big deal is except multicolor and speed. 
I’m having the same problem and it seems to be only happening with a specific filament. Can you point me out to this post?
Poor quality filament is a headache, and the PLA Matte filaments from bambu are a coin toss.
I’ve noticed that I have to constantly cut the end of it manually in order to unjam it and sometimes I have to do cold pulls as well,
Looking at the profile, I guess the reason is due to density, the PLA Matte is at a density of 1.30 and the regular and wood PLA that I have are at 1.27 and 1.23 respectively.
Important to note that Bambu does not make filaments, they source it from other companies, and people have complained a number of times about the Matte filaments, so it seems to be more of a manufacturing and R&D problem than the actual printer.
Just use regular PLA if you want a headache free experience
Or you can learn to live with it an try multiple brands to figure out which ones work best on for which colours
Or use a .6 nozzle. Fewer clogs, stronger layers.
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Hello,
im very new to the 3D printing topic since i got my A1 at the beginning of last week and encountered kinda the same problem.
For me its not a Cloging problem instead the filament gets stuck on color changes on the gap where the filament cutter is guided along.
i have read all comments here and loosened the tension on the extruder gears
for now there is no problem with the feeding (at 5% of a 5 1/2 Hour Print)
Update Print finished without any errors it seems to be the tension on the extruder is too high with loosening it it seems to be better still having some issues with feeding matte fillament
The extruder is grinding a groove into the filament and then looses the grip
well, same here, I printed 3 rolls of Bambu PLA desert tan with no problems, I got the bone white and it clogged my .4 nozzle after 4 hours of printing, ended up buying another one, 3 hours in to printing and same situation, air printing. I will try with 230C and .8 nozzle.
.4mm clogged again at 250c, and lowered volume from 22 to 18, Im testing now default setting with .8mm. i was able to print 6 hours with no problems before, so i’m back running test on .8, so far its looking good on small test, will print the 6 hour one and order a .6mm to see if that one works.
Similar issue here.
Brand new A1 mini (base unit without AMS). Firmware 01.03.01.02.
Filaments used: PLA Matte & Basic on the standards spool.
No extra items attched. Just the base unit. No glue used
Status:
Never touched the build plate with my hand (to avoid grease)
Never did a successful print
Used only the 3d Models on the A1 unit itself without any PC or Phone software.
More details:
When i start a print (in my example the bed scraper from the A1 internal memory) it does the usual setup for a few minutes and then always cuts the filament early into the print. Excatly at the same time into the print. Messages on the infoscreen in folowing order: “cut filament” (extruder unit slides to the right to cut filament) → “pull back filament” → “filament stuck”.
I can then successfully unload and reload the filament but it keeps repeating the same cycle:
Filament cut early into print → unload/reload-> trying to print again-> filament cut and so on.
Can upload some images/videos if you need more detailed information.
Best regards 0/