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Filament is not going out of nozel  

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YigalB
(@yigalb)
Eminent Member
Filament is not going out of nozel

My mini is less than one month old. So far was working well. Today stopped printing. It looks like no material comes out of nozel. Peraps not being pushed?? It looks like  the filament is not being actively pushed. I pulled the filament out of the plastic tubes and back. Also cleaned the nozel with the pin. Still no filament going out.

This topic was modified 3 years ago by YigalB
Posted : 04/12/2020 7:59 pm
karl-herbert
(@karl-herbert)
Illustrious Member
RE: Filament is not going out of nozel
Posted by: @yigalb

My mini is less than one month old. So far was working well. Today stopped printing. It looks like no material comes out of nozel. Peraps not being pushed?? It looks like  the filament is not being actively pushed. I pulled the filament out of the plastic tubes and back. Also cleaned the nozel with the pin. Still no filament going out.

Hello and welcome to the Prusaforum!

Possibly the hotend or the nozzle is dirty or clogged. On these pages you will find some tips: https://help.prusa3d.com/en/article/clogged-nozzle-hotend-mini_112011

 

Statt zu klagen, dass wir nicht alles haben, was wir wollen, sollten wir lieber dankbar sein, dass wir nicht alles bekommen, was wir verdienen.

Posted : 04/12/2020 9:17 pm
YigalB
(@yigalb)
Eminent Member
Topic starter answered:
RE: Filament is not going out of nozel

@karl-herbert

Thank you for the fast answer. I read the tips: very little of filament is going out. So it is not "partial layers".

My guess is that the filament is not being pushed to the nozel. I have no idea how it is pushed, and how to check if my guess is correct.

Posted : 05/12/2020 6:41 am
YigalB
(@yigalb)
Eminent Member
Topic starter answered:
RE: Filament is not going out of nozel

More inputs from my side: following the guide, I heated the nozel, and more filament went down. But when I tried "purge" very little filament came out, and no filament was pulled inside from the reel. Also, when I try unloading the filament, it is not pulled out. Should I now open the tube that goes from the orange box to the printing head?

Posted : 05/12/2020 9:23 am
Texy
 Texy
(@texy)
Reputable Member
RE: Filament is not going out of nozel

Have you unscrewed the nozzle completely, then tried to push filament through? It could be the blockage is in the nozzle itself, or above it, by removing the nozzle and pushing filament through, may help to determine where the blockage is. If you haven't already, you should get spare nozzles.

 

Texy

Posted : 05/12/2020 1:35 pm
YigalB
(@yigalb)
Eminent Member
Topic starter answered:
RE: Filament is not going out of nozel

@texy

Not yet, because I think the problem is earlier: the filament is not loaded properly. The filament shape is damaged when going through the extruder. See the attached picture: the filament after loading it, and unloading it. 

When loading it: it made a noise as if it is going through the extruder, but did not show in the tube towards the print head.

The picture shows the filament situation after unloading, just after loading it.

I assume that in the few times it did pass the extruder, the shape was damaged, and it was stuck in the small tube before the print head. 

Can I check somehow what goes on inside the extruder?

Posted : 05/12/2020 5:39 pm
Texy
 Texy
(@texy)
Reputable Member
RE: Filament is not going out of nozel

Unscrew the extruder body from the Mini and take it apart - just a few screws and you’ll be able to see the cogs  better. 
Texy

Posted : 05/12/2020 5:42 pm
YigalB
(@yigalb)
Eminent Member
Topic starter answered:
RE: Filament is not going out of nozel

Please take a look at the extruder after opening it: does this explains the problem?

Would it be OK to try running the filament through while the extruder is apart, to check if cleaning solved the problem?

Posted : 08/12/2020 1:54 pm
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