Good afternoon! I’m printing on a Bambu Lab X1CC. I’ve encountered a problem where the filament continues to flow slightly from the nozzle when the filament is running through the nozzle. Additionally, the filament continues to flow from the nozzle after calibration. Essentially, the filament is constantly flowing from the nozzle, which negatively affects the quality of the print, especially the first layer. I’ve tried adjusting the temperature, but it hasn’t helped. Can you suggest a solution to ensure that the filament flows from the nozzle only when necessary?
You need to dry your filament.
When there is moisture in the filament, when it enters the hot end, the heat causes the water to turn to steam, which increases the pressure inside the hot end, which forces plastic out of the nozzle even when the extruder motor isn’t running.
It’s not an uncommon issue.
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Hi @Roman_Fale
Welcome to the forum.
Can you be more precise and provide details regarding the filament material, brand, profile, and, most importantly, whether it is calibrated and dried?
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I’ll try it, thank you! Can you tell me where I can find a guide on drying threads, which thread to dry, and how to store it?
Google “how do I dry my 3D printer filament”. 
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I use different filaments, including Bambu PLA. The nozzle is standard 0.4. The filament calibrates every time, even when I turn off the filament and table calibration, there is one calibration line, and the table still calibrates again. I did not dry the filament.
Hi
I found over time that filament dry is one of the leading causes of printing issues, and must be discarded before adressing other possibilities. You also refer to printing multiple filaments, so if the problem is specific to one spool, the probability of being wet is even higher.
How to dry?
Forgot to ask, do you have the AMS or the AMS 2 Pro? The latter has filament drying capacity.
If not, you can try the printer tool:
If you end up drying filament regularly (I do), you should consider a dedicated tool to avoid having the print occupied and likely get faster results
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