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Help: Filament sensor with it´s own life  

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Duck Druck
(@duck-druck)
Member
Help: Filament sensor with it´s own life

Hi there,
if someone running the Core One L runs into similar issues.... How did you fix the "sometimes detecting - most of the time not detecting filament" issue? This is really annoying as the printer runs out of filament without noticing, dead running until the job finishes....and the printer doesn't provide any feedback or error messages at all

Any ideas?
Cheers,

Posted : 27/01/2026 10:16 pm
_KaszpiR_
(@_kaszpir_)
Noble Member
RE: Help: Filament sensor with it´s own life

disassemble the filament sensors, recheck if the ball is properly moving inside?
https://help.prusa3d.com/article/nextruder-filament-sensor-core-one-core-one-l-mk4-s-mk3-9-s-xl_465702

or do you mean the side mounted filament sensor? https://help.prusa3d.com/guide/how-to-replace-the-side-filament-sensor-core-one-l_942491#962835

See my GitHub and printables.com for some 3d stuff that you may like.

Posted : 28/01/2026 11:48 am
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