Prusa Mini: Filament frequently jams after about 2 hours of printing
 

[Solved] Prusa Mini: Filament frequently jams after about 2 hours of printing  

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sylvain-t2
(@sylvain-t2)
Trusted Member

@jeff-cogburn

Hello Jeff,

Here is what you can find into Prusa information: refer to the  jpg file attached

Hope this could help

Rgds

Hotend PTFE tube - parts preparation

J'essaye de faire, mesurer et partager...plus pratique que théorique, peu de blabla, des résultats… La preuve incombe à celui qui affirme….en faisant et mesurant...
Posted : 27/10/2020 6:21 pm
Andy
 Andy
(@andy-21)
New Member

Thanks so much for the helpful posts. Can confirm issue still exists. My Mini ran great for 3 months then fell into this same situation. Was able to get it running again with adjustments to the tube in the hotend. Keeping the other suggestions on hand in case that doesn’t permanently fix the issue.

Posted : 17/01/2021 5:39 am
sylvain-t2
(@sylvain-t2)
Trusted Member

@andy-21

Hello,

Once this clogging issue araised, then you have to pay attention into disassemble and to clean everything. Please refer to page 4 of this topic, if not already read...

For this small piece of PTFE tube, inside the heatbreak, you need to insure it is a little bit "constrained" so it can not move at all up/down.

Also, extruder system (bowden) gear/teeth has to be cleaned on regular basis (brush/needle + air pressure)

There are some hardware solution to this: Triangle Lab or Bondtech...

If you can, check also real Temperature of extruder output....you may found lower than expected (around 5~7°C for me) so you may consider this on the slicing parameters.

Best regards

J'essaye de faire, mesurer et partager...plus pratique que théorique, peu de blabla, des résultats… La preuve incombe à celui qui affirme….en faisant et mesurant...
Posted : 17/01/2021 1:38 pm
MikeB
(@mikeb-4)
New Member

@marc-16

This worked for me mostly.  I did the same measure and the temperature seems a bit off.  What is rather frustrating though with this is that one print is perfect, then the next print it jams, etc....  This is our first prusa printer and so far had more trouble with it that any other printer (and we have 20 of them).  But at least the increased temp seems to work for now.

Posted : 20/02/2021 6:26 pm
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