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OutlawECHO
(@outlawecho)
Eminent Member
Prusa Mini Extruder Jam

All,

I have a new problem with my extruder and cannot figure out the issue. Disconnected from the hotend, my extruder will still jam randomly. I can extrude and retract, extrude and retract, then all of a sudden it will lock up on an extrude. I have disassembled my extruder several times now, but still cannot find the issue. Here is a link to a video of the issue;

 

Any input would be appreciated.

Posted : 28/10/2020 2:52 am
ChillyPenguin
(@chillypenguin)
Trusted Member
RE: Prusa Mini Extruder Jam

Something does not look quite right, have you modified or reprinted anything?

 

The extruder housing should be a single colour, and the bowden connector looks like a push fit. Try returning your Mini to stock.

Posted : 28/10/2020 9:43 am
karl-herbert
(@karl-herbert)
Illustrious Member
RE: Prusa Mini Extruder Jam
Posted by: @outlawecho

All,

I have a new problem with my extruder and cannot figure out the issue. Disconnected from the hotend, my extruder will still jam randomly. I can extrude and retract, extrude and retract, then all of a sudden it will lock up on an extrude. I have disassembled my extruder several times now, but still cannot find the issue. Here is a link to a video of the issue;

 

Any input would be appreciated.

Your extruder blocks. Have you ever disassembled it and maybe missed something during assembly?

Maybe this video will help:

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 : 28/10/2020 5:27 pm
OutlawECHO
(@outlawecho)
Eminent Member
Topic starter answered:
RE: Prusa Mini Extruder Jam

I have replaced the 3d printed parts only because the stock parts were still giving me issues. The extruder would grind/jam so I replaced with rev4 parts (or latest rev). Still issues. Finally upgraded to bondtech and issue is gone.

Posted : 30/10/2020 8:09 pm
karl-herbert
(@karl-herbert)
Illustrious Member
RE: Prusa Mini Extruder Jam

@outlawecho

This is of course also a possibility. But make sure that you consider the estep values in the slicer (M92 E415):

https://marlinfw.org/docs/gcode/M092.html

 

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 : 30/10/2020 9:00 pm
OutlawECHO
(@outlawecho)
Eminent Member
Topic starter answered:
RE: Prusa Mini Extruder Jam

@karl-herbert

Thanks Karl. I did add that. Since I upgraded to the dual drive extruder I haven't had extruder issues.

Posted : 30/10/2020 9:06 pm
karl-herbert
(@karl-herbert)
Illustrious Member
RE: Prusa Mini Extruder Jam

@outlawecho

Then I wish you much fun with the Bondtech and -

happy printing 👍 

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 : 30/10/2020 9:15 pm
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