Filament stuck in the hotend of i3MK3S+
 
Notifications
Clear all

Filament stuck in the hotend of i3MK3S+  

  RSS
prusanewuser
(@prusanewuser)
Prominent Member
Filament stuck in the hotend of i3MK3S+

Hi, I have been using PETG but switched to PLA today. It was working fine but all of a sudden, no filament came out from the nozzle in a new print job. Using the approaches described in:

https://help.prusa3d.com/en/article/removing-filament-from-extruder-manually_121491

https://help.prusa3d.com/en/guide/how-to-replace-a-ptfe-tube-mk3s-mk2-5s-mmu2s_21664/

did not help. Trying to do loading and unloading filament but it resulted in loud noise only. When I removed the hotend from the i3MK3S+, I found that there are some melt filament in between the top of the heatblock and the cylindrical heatsink. Because of that, I cannot unscrew the heatsink to get the PTFE-tube and the stuck filament out. Any good method to take them out? Is it going to be very difficult and time consuming to do it?

 

Posted : 12/04/2021 4:32 am
pcweber
(@pcweber)
Member
RE: Filament stuck in the hotend of i3MK3S+

The nozzle is not tightened in accordance with prusa or e3d procedures.

Heat the nozzle to 250° C, disable the motors, then push the filament from the top of the extruder. If that's a no go then with the extruder heated push a needle the size of your nozzle while this is hot. I've even pushed the filament through with the long thin Allen wrench.

Good luck 

Stay safe and healthy, Phil

Posted : 12/04/2021 10:56 am
Share: