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Filament stuck in the hot end?!  

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christie.l
(@christie-l)
Active Member
Filament stuck in the hot end?!

Hi guys!

Another problem after another haha Built my mk3 recently and it's been working fantastic the past 2 weeks until last weekend. Had a splat of printing a job and it clogged up the nozzle area but I was able to clear it up via heating it up, swearing and carefully picking around the cables. It worked fine for another 2 days until this fine weekend. Smells like something died/burned/melted, so I started the process of unloading the filament. And at the end, I had to yank out (with alot of struggle/heating/MUCH patience) what PLA filament out of my extruder. BUT I was able to figure that something still seemed stuck in the hot end area when my extruder wasn't even "loading/letting out" any filament. Is this normal and does it happen often? 😐

I've followed the "replacing nozzle" instructions in the manual/booklet to dissemble the extruder for visible inspection. And here's a photo of how far I was able to test a needle going in from bottom up the nozzle before feeling it getting stuck around the mid area with the multiple lined cylinder (Obviously a techhead who knows the language...) = so around 3cm upwards.

I've heated this up to 250/270 degrees (and waited 5mins to see if it'll melt like cheese) and poked/prodded it to try unblock it. But it keeps bending the needles (0.3 acupuncture ones, yes. I went to buy some ruddy acupuncture ones like the booklet said.) I have and remain clogged.

Just wondering if there's anything else I can do to figure out what is this evil? Or if it's at the point where I'll have to consider getting a replacement part? OR is this how it's supposed to be and I've been trying to fix the wrong part!?

Hope to hear from you soon.

Cheers,
Christie

Publié : 05/07/2018 2:35 am
bobstro
(@bobstro)
Illustrious Member
Re: Filament stuck in the hot end?!

I posted a detailed response to your other post.

My notes and disclaimers on 3D printing

and miscellaneous other tech projects
He is intelligent, but not experienced. His pattern indicates two dimensional thinking. -- Spock in Star Trek: The Wrath of Khan

Publié : 05/07/2018 4:27 am
bobstro
(@bobstro)
Illustrious Member
Re: Filament stuck in the hot end?!

I posted a detailed response to your other post.

My notes and disclaimers on 3D printing

and miscellaneous other tech projects
He is intelligent, but not experienced. His pattern indicates two dimensional thinking. -- Spock in Star Trek: The Wrath of Khan

Publié : 05/07/2018 4:27 am
christie.l
(@christie-l)
Active Member
Topic starter answered:
Re: Filament stuck in the hot end?!

Hi guys!

Just wanted to let you know to conclude this thread: it was the teflon tube. No idea how since this is less than a month since I built my printer, but the tube was pretty warped and wouldn't let anything through. Got a replacement thanks to Voxelfactory and put it back to together and it's working fine again.

Thank you for all your suggestions, everyone!

Keep up this great community 🙂

Publié : 15/07/2018 1:25 am
LaPointe
(@lapointe)
French moderator and translator Moderator
Re: Filament stuck in the hot end?!

Thanks for the feedback, it's always usefull for the others.

Publié : 15/07/2018 1:51 pm
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