Another Stuck Filament Post - How do I print this? (Printing help) https://forum.prusa3d.com/forum/english-forum-original-prusa-i3-mk4s-how-do-i-print-this/another-stuck-filament-post/ Prusa3D Forum Discussion Board en-US Sat, 07 Mar 2026 00:02:38 +0000 wpForo 60 RE: Another Stuck Filament Post https://forum.prusa3d.com/forum/english-forum-original-prusa-i3-mk4s-how-do-i-print-this/another-stuck-filament-post/#post-777804 Mon, 12 Jan 2026 15:39:32 +0000 Try a cold pull, or several.  Or try a standard nozzle.  HF nozzles are much more prone to partial clogging.  The potential slight increase in speed isn’t worth it, in my opinion, so I stick with standard flow.

]]> How do I print this? (Printing help) LarGriff https://forum.prusa3d.com/forum/english-forum-original-prusa-i3-mk4s-how-do-i-print-this/another-stuck-filament-post/#post-777804 Another Stuck Filament Post https://forum.prusa3d.com/forum/english-forum-original-prusa-i3-mk4s-how-do-i-print-this/another-stuck-filament-post/#post-777785 Mon, 12 Jan 2026 12:22:14 +0000 I have read through some of the previous posts and I am still not sure how to solve this issue.  After about a year of owning a MK4/S (kit) I am now having the stuck filament come-up pretty much every print.  Happens with different brands of filaments and with both stock and 3rd party print beds.  Am using a brand new factory high flow print head assembly. 

 

The annoying thing is I have to go down and go through the load/reload process and then it prints just fine.  I have tried the sensor cleaning steps.  Haven't tweeked the screws on the top of the extruder.  Has anybody come-up with a consistent explanation / solution to this.  Clearly it happens a to a lot of folks.

]]> How do I print this? (Printing help) JOHNE https://forum.prusa3d.com/forum/english-forum-original-prusa-i3-mk4s-how-do-i-print-this/another-stuck-filament-post/#post-777785