Filament got stuck again  

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dclaar
(@dclaar)
Eminent Member

I went to print today and when I pulled out the old filament, it didn't come all the way out. I tried the various "heat it up, let it drip", "try to push it out", etc, but none of it worked, so I had to take it apart again.

When I got it apart, it seemed like the filament had caught on the very bottom lip of the PTFE tube. After removing that, I was able to heat it up and push the rest out.

Now, maybe the lesson is to **always** remove the filament immediately at the end of a job, but I was wondering if this was a symptom? Maybe I have a gap or something at the end of the tube that catches filament?

Or is it just that filament gets brittle after sitting for a while. The filament between the spool and the top of the print head _did_ spontaneously snap just sitting there (which was probably a warning sign!) 

Posted : 30/09/2020 3:11 am
cwbullet
(@cwbullet)
Illustrious Member

I have found that it usually due to a gap that allows expansion of melted filament into the gap and it dry and sticks.  I have found it happens every time I overheat the filament.  

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Chuck H
3D Printer Review Blog...
Posted : 30/09/2020 3:42 am
dclaar
(@dclaar)
Eminent Member

@charles-h13

I love that you are a "Famed Member"! Also, I now see a ["Related Topics"]( https://forum.prusaprinters.org/forum/original-prusa-i3-mk3s-mk3-hardware-firmware-and-software-help/prusa-edition-heat-break-easily-jam-clog-with-pla/) that looks like it applies exactly. I'll go through the 10 (!) pages.

Posted : 30/09/2020 4:01 am
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