<![CDATA[Help wanted undextrusion and stuck filament]]>I have been getting these lines where there seems to be not enough filament extruded accompanied by some clocking noises (not really grinding). Recently I got a few errors about stuck filament as well.

I did a few cold pulls but there wasn't any debris to be seen and the three ends (cht) were clearly visible.

Noises, pattern and errors persist.

Pla, core one, max layer with 0.4 nozzle.

Any help appreciated

Edit is the image not loading for everyone?

]]>https://fedi.wiki/topic/32c3b715-65cf-4805-a50b-9c9196044c6d/help-wanted-undextrusion-and-stuck-filamentRSS for NodeThu, 10 Sep 2026 11:52:48 GMTSun, 30 Aug 2026 11:06:35 GMT60<![CDATA[Reply to Help wanted undextrusion and stuck filament on Sun, 30 Aug 2026 14:34:03 GMT]]>@prenatal_confusion that is why PETG thermoplastic fiament first then the PLA then the chamber will be too cold to allow this the chamber in the hot end

]]>https://fedi.wiki/post/https://mastodon.world/users/Timpostma/statuses/117184950651916073https://fedi.wiki/post/https://mastodon.world/users/Timpostma/statuses/117184950651916073Sun, 30 Aug 2026 14:34:03 GMT<![CDATA[Reply to Help wanted undextrusion and stuck filament on Sun, 30 Aug 2026 14:29:16 GMT]]>That should atop after a few layers though, right?

]]>https://fedi.wiki/post/https://feddit.org/comment/14712501https://fedi.wiki/post/https://feddit.org/comment/14712501Sun, 30 Aug 2026 14:29:16 GMT<![CDATA[Reply to Help wanted undextrusion and stuck filament on Sun, 30 Aug 2026 14:28:36 GMT]]>Since I have the end of the pulled filament and can see the 3 times split from the cht the blob is either not there OE inside one or more of the smaller channels after the split.

]]>https://fedi.wiki/post/https://feddit.org/comment/14712488https://fedi.wiki/post/https://feddit.org/comment/14712488Sun, 30 Aug 2026 14:28:36 GMT<![CDATA[Reply to Help wanted undextrusion and stuck filament on Sun, 30 Aug 2026 14:27:38 GMT]]>Picture works now. It starts immediately

And no grinding on the filament.

Edit thr indx upgrade is coming soon so a thorough rebuild is coming too.

]]>https://fedi.wiki/post/https://feddit.org/comment/14712477https://fedi.wiki/post/https://feddit.org/comment/14712477Sun, 30 Aug 2026 14:27:38 GMT<![CDATA[Reply to Help wanted undextrusion and stuck filament on Sun, 30 Aug 2026 14:27:14 GMT]]>Only petg and pla with this head.

]]>https://fedi.wiki/post/https://feddit.org/comment/14712472https://fedi.wiki/post/https://feddit.org/comment/14712472Sun, 30 Aug 2026 14:27:14 GMT<![CDATA[Reply to Help wanted undextrusion and stuck filament on Sun, 30 Aug 2026 12:30:07 GMT]]>That (or something like it) happens to me with some bad filament. It gets stuck in a blob inside the printer head between the hot end and the gears pulling in the filament.

I have to take apart the printer head and pull the hardened blob out. I actually have to do it now.

]]>https://fedi.wiki/post/https://slrpnk.net/comment/24114017https://fedi.wiki/post/https://slrpnk.net/comment/24114017Sun, 30 Aug 2026 12:30:07 GMT<![CDATA[Reply to Help wanted undextrusion and stuck filament on Sun, 30 Aug 2026 12:27:12 GMT]]>@prenatal_confusion @BigDanishGuy I got a prusa core one my question is name every thermoplastic type you used then see if that’s why it is clogged imagine if someone used aluminium to extrude & then tried wax that’s why I am asking

]]>https://fedi.wiki/post/https://mastodon.world/users/Timpostma/statuses/117184451885038632https://fedi.wiki/post/https://mastodon.world/users/Timpostma/statuses/117184451885038632Sun, 30 Aug 2026 12:27:12 GMT<![CDATA[Reply to Help wanted undextrusion and stuck filament on Sun, 30 Aug 2026 12:20:34 GMT]]>If temp is stable try having a look at the filament. Is the extruder grinding the filament?

It could also be a case of a blocked nozzle. Though that doesn't explain the stuck filament. scratch that I just reread your post

When starting with an unpowered printer, i.e. the first print after powering printer up, does the issue happen at any part of the print, or only after a little while?

]]>https://fedi.wiki/post/https://sh.itjust.works/comment/27166771https://fedi.wiki/post/https://sh.itjust.works/comment/27166771Sun, 30 Aug 2026 12:20:34 GMT<![CDATA[Reply to Help wanted undextrusion and stuck filament on Sun, 30 Aug 2026 11:54:39 GMT]]>Nozzle might also just be too close to the bed.
Mine did a kind of of "tock" sound when it struggled to extrude.

PS: image link seems broken

]]>https://fedi.wiki/post/https://sh.itjust.works/comment/27166502https://fedi.wiki/post/https://sh.itjust.works/comment/27166502Sun, 30 Aug 2026 11:54:39 GMT<![CDATA[Reply to Help wanted undextrusion and stuck filament on Sun, 30 Aug 2026 11:33:35 GMT]]>It is a core one and the temp does seem stable

]]>https://fedi.wiki/post/https://feddit.org/comment/14710571https://fedi.wiki/post/https://feddit.org/comment/14710571Sun, 30 Aug 2026 11:33:35 GMT<![CDATA[Reply to Help wanted undextrusion and stuck filament on Sun, 30 Aug 2026 11:19:31 GMT]]>Without knowing what printer you have I offer this advice:

Does your printer keep the temperature? I had a creality cr6 that underextruded and in my case it was bad capacitors on the heating element circuit.

]]>https://fedi.wiki/post/https://sh.itjust.works/comment/27166100https://fedi.wiki/post/https://sh.itjust.works/comment/27166100Sun, 30 Aug 2026 11:19:31 GMT