Holes in extruded filament - How do I print this? (Printing help) https://forum.prusa3d.com/forum/how-do-i-print-this-printing-help/holes-in-extruded-filament/ Prusa3D Forum Discussion Board en-US Fri, 12 Jun 2026 23:45:42 +0000 wpForo 60 RE: Holes in extruded filament https://forum.prusa3d.com/forum/how-do-i-print-this-printing-help/holes-in-extruded-filament/#post-684675 Fri, 17 Nov 2023 14:44:47 +0000 I forgot to change status to solved, I’m sorry. The problem was in the end wet filament. I changed nozzle and pfte hotend tube and the problem was still there. But then I tried completely new filament and it solved the problem. So basically I found out that my dryer doesn’t work. Thank u all for your tips.

]]> How do I print this? (Printing help) Brejvi https://forum.prusa3d.com/forum/how-do-i-print-this-printing-help/holes-in-extruded-filament/#post-684675 https://forum.prusa3d.com/forum/how-do-i-print-this-printing-help/holes-in-extruded-filament/#post-684553 Thu, 16 Nov 2023 21:19:26 +0000 I wonder if you damaged the nozzle when cleaning it ... try a new nozzle.

Cheerio,

]]> How do I print this? (Printing help) Diem https://forum.prusa3d.com/forum/how-do-i-print-this-printing-help/holes-in-extruded-filament/#post-684553 RE: Holes in extruded filament https://forum.prusa3d.com/forum/how-do-i-print-this-printing-help/holes-in-extruded-filament/#post-684385 Wed, 15 Nov 2023 22:40:39 +0000 Hello, 

thank you for your reply and advice, i forgot to mention that I did the “manual flush” during the cleaning process. Unfortunately it didn’t help. 

]]> How do I print this? (Printing help) Brejvi https://forum.prusa3d.com/forum/how-do-i-print-this-printing-help/holes-in-extruded-filament/#post-684385 https://forum.prusa3d.com/forum/how-do-i-print-this-printing-help/holes-in-extruded-filament/#post-684381 Wed, 15 Nov 2023 21:32:53 +0000

Filament is dry,

Make absolutely certain of this.

tried another one, same problem. Any ideas? Thank you.

Try a manual flush through: loosen off the extruder idler completely - temporarily disconnect the PTFE tube from the extruder - heat to the print temperature of the hottest printing filament you use.  Take a metre of PLA and push it down through the hotend by hand - first slowly then as fast as it will go - finally pause for a second then pull out the end as fast as you can.

This procedure should dislodge any recalcitrant filament residues.

don’t mind the first layer, Z offset was not calibrated yet.

OK, let the hotend cool and reconnect/retension everything before calibrating.

Cheerio,

]]> How do I print this? (Printing help) Diem https://forum.prusa3d.com/forum/how-do-i-print-this-printing-help/holes-in-extruded-filament/#post-684381 Holes in extruded filament https://forum.prusa3d.com/forum/how-do-i-print-this-printing-help/holes-in-extruded-filament/#post-684313 Wed, 15 Nov 2023 14:59:24 +0000
  • Hello, 

    • few days ago i had a print failure, the nozzle got clogged and the extruder milled the filament. So i took extruder apart cleaned it, unclogged nozzle and cleaned it as well + used cold pull method. Then I wanted to do a test print. But it didn’t go well as u can see on the photo. So i cleaned the nozzle again, removed and cleaned the PTFE hot end tube and the problem it’s still there. Filament is dry, tried another one, same problem. Any ideas? Thank you.
    P.S. don’t mind the first layer, Z offset was not calibrated yet.

    ]]>     How do I print this? (Printing help) Brejvi https://forum.prusa3d.com/forum/how-do-i-print-this-printing-help/holes-in-extruded-filament/#post-684313