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Filament not coming out mid printing  

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coucou
(@coucou)
Active Member
Filament not coming out mid printing

Hi

Filament (PLA) stop coming out mid printing (prusa mini), but the printing continued,

what I already did:

- re-print
- general test
- purge filament
- purge filament using higher temp settings (260)
- purge filament again

It was actually printing then the filament just stopped coming out so don't think it's a dirty nozzle

Some weird sound when was doing the filament purging so have a feeling it has to do with the mechanism that moves the filament.

Is there a way test /fix it/magically make all my problems disappear?

thanks

 

Veröffentlicht : 18/11/2021 11:24 am
coucou
(@coucou)
Active Member
Themenstarter answered:
RE: Filament not coming out mid printing

small update:

also tried load / unload

it seems that the filament broke between the moving mechanism (is my guess) and the extruding mechanism as the bit leading there was not moving and just got the broken bit out. I tried to push through but wouldn't get through...

Veröffentlicht : 18/11/2021 11:51 am
Zoltan
(@zoltan)
Mitglied Moderator
RE: Filament not coming out mid printing

Unscrew the the long PTFE tube and try to remove any filament from it.

The clicking meant, your filament was stucked and the extruder motor was loosing steps - 

even an old man can learn new things 🙂
Standard I3 mk3s, MMU2S, Prusa Enclosure, Fusion 360, PrusaSlicer, Windows 10
PRUSA MINI+ Prusalink + Prusa Connect

Veröffentlicht : 18/11/2021 12:01 pm
coucou
(@coucou)
Active Member
Themenstarter answered:
RE: Filament not coming out mid printing

I unscrewd the bolts but it seems stuck, should I cut it? should I try to unscrew the extruder tip?

Veröffentlicht : 18/11/2021 12:43 pm
Zoltan
(@zoltan)
Mitglied Moderator
RE:

DO NOT CUT THE PTFE TUBE !!!

If there is a left over hanging from extruder try to unload (Filament-> Unload filament) , this should help.

Open the extruder cover and check if any filament is there stucked. 

The leftover hanging from the nozzle - heat the nozzle (Settings-.Temperature-> nozzle) and when heated ,try to pull it cerafully out, or try the cold pull to get all filament remains out of the nozzle.

even an old man can learn new things 🙂
Standard I3 mk3s, MMU2S, Prusa Enclosure, Fusion 360, PrusaSlicer, Windows 10
PRUSA MINI+ Prusalink + Prusa Connect

Veröffentlicht : 18/11/2021 12:48 pm
coucou
(@coucou)
Active Member
Themenstarter answered:
RE: Filament not coming out mid printing

ok, well, gosh.

it seems to be stuck on the extruder end so even if I use the unload filament function there is nothing there to pick up right now I think,

so I should turn the printer on and try to pull the filament up from the extruder... I guess,, argh

Veröffentlicht : 18/11/2021 12:55 pm
coucou
(@coucou)
Active Member
Themenstarter answered:
RE: Filament not coming out mid printing

ok just put the nozzle temp to 220 and got some pliers to pull it

Veröffentlicht : 18/11/2021 1:04 pm
coucou
(@coucou)
Active Member
Themenstarter answered:
RE: Filament not coming out mid printing

Ok I managed to do it but the issue seems to be on the other side of the mechanism as well, as I still get that sound and it doesn't get through, so I unscrew that part as well?

Veröffentlicht : 18/11/2021 1:32 pm
Zoltan
(@zoltan)
Mitglied Moderator
RE: Filament not coming out mid printing

You can open the extruder inspection door (on top of extruder) and check, if you can find out any filament left.

If the filament does not want to come out, the extruder should probably been disassembled (the last choice) to get the remains out of it.

even an old man can learn new things 🙂
Standard I3 mk3s, MMU2S, Prusa Enclosure, Fusion 360, PrusaSlicer, Windows 10
PRUSA MINI+ Prusalink + Prusa Connect

Veröffentlicht : 18/11/2021 1:56 pm
coucou
(@coucou)
Active Member
Themenstarter answered:
RE: Filament not coming out mid printing

oh gosh, well I definitely can't see anything when I open it just a gear...

Veröffentlicht : 18/11/2021 2:15 pm
Lichtjaeger
(@lichtjaeger)
Noble Member
RE: Filament not coming out mid printing

🙄 https://help.prusa3d.com/en/guide/how-to-access-and-clean-the-extruder-pulley-mini-mini_126457

Veröffentlicht : 18/11/2021 2:18 pm
coucou
(@coucou)
Active Member
Themenstarter answered:
RE: Filament not coming out mid printing

Alright.. thanks, ouf will try it out. Hope I don't mess it up

Veröffentlicht : 18/11/2021 2:23 pm
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