The extruded filament is curling up and sticks to the nozzle when purged.
 
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The extruded filament is curling up and sticks to the nozzle when purged.  

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Alexa Fujino
(@alexa-fujino)
Active Member
The extruded filament is curling up and sticks to the nozzle when purged.

The other day while manually switching out filaments mid-print I noticed that the filament that I had just loaded was coming out towards the side, curling up and forming a huge blob that was sticking to the nozzle and hot end. I tried purging the nozzle with cleaning filament but that also kept curling badly. I spoke to customer support and they suggested cold pulling. I tried cold pulling a few times and the nozzle imprint left of the end of the cold pulled filament was missing a gap (see photo). The filament continues curling up when ever I load filament or I let the filament purge. Does anyone have any suggestions of how I can fix this?

Impressing left by nozzle on filament after cold pull

Posted : 24/01/2023 10:19 pm
fuchsr
(@fuchsr)
Famed Member
RE: The extruded filament is curling up and sticks to the nozzle when purged.

How old is the nozzle? Have you tried a new one?

Posted : 25/01/2023 12:23 am
Diem
 Diem
(@diem)
Famed Member

I think @fuchsr has it.  This is often a symptom of a worn or damaged nozzle.

Cheerio,

Posted : 25/01/2023 3:54 am
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