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Filament not loading, makes skipping sound  

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Diem
 Diem
(@diem)
Illustrious Member

In extremis, when a hotend assembly is completely clogged, you are either going to have to replace the whole thing ... or you can disassemble and heat all the metalwork until you can clear it and hope the result is still working.  Either way you will need to replace the PTFE.

Cheerio,

 

Posted : 14/11/2021 7:41 pm
KTB
 KTB
(@ktb)
Active Member
RE: Filament not loading, makes skipping sound

Your problem mirrors mine.  I removed the nozzle and could not push filament through so I let it cool down, disassembled the heatsink from the hot end, removed the PTFE tube in the photo.  No damage I could see.  I still could not get anything through the heatsink/heatbreak.  I removed the heatbreak from the heatsink and found the little bit of cooked filament pictured next to the tube.  I ordered a replacement heatbreak, some PTFE tubes and nozzles for spare parts and even though I don't see any damage on any of these bits, I'll just replace them to be sure.  FYI ethyl acetate will soften PLA for cleaning it off the nozzle or heatbreak.  Depending where you live, you can buy the stuff at a hardware store as "MEK Substittue".

Posted : 14/11/2021 7:46 pm
rmenousek
(@rmenousek)
Active Member
RE: Filament not loading, makes skipping sound

Also having this issue. I disassembled the hotend, replaced the nozzle because it was clogged. Now it does not grab the filament when loading. I can see the gears are turning when trying to load. If I move the extruder down via the LCD panel I can push filament all the way down and if I heat the hotend it does melt the filament. Trying to figure what to do next.

Posted : 28/11/2023 4:36 pm
KTB
 KTB
(@ktb)
Active Member
RE: Filament not loading, makes skipping sound

If you canbeasily push the filament into the hotend, check the tensioner screw is properly tightened.  If the tension is good, check the set screw on the filament drive gear.

Posted : 28/11/2023 5:33 pm
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