RE: Keep getting a filament stuck message on my MK4S
Hello all!
I am working on an enclosure now. The last print showed extreme warping
I suspect somehow there is some draft hitting it enough. Despite brim and a clean sheet I get warps if I print over the whole sheet.
Certainly environmental impact. I rotated the print around to notice that it is much worse in other spots.
RE: Keep getting a filament stuck message on my MK4S
Hi, not sure if my solution is relevant to others but...
Short description:
Unload filament, crank up the nozzle temp to its max and see what happens.
A small PETG droplet fell to the build plate.. seems the "unload filament" process left a very small amount of PETG in the nozzle. Just enough to cause a sensor problem but not enough t0 block PLA flow.
Details:
I have an MK4S kit, no enclosure, 04mm HF nozzle, built in October 2024 and has been running practically non-stop with PLA.
I recently started printing in PETG, swapping back and forth between PLA and PETG. This weekend I went back the Prusament PETG to print a mod in orange, When I switched back to PLA, my next print had some very minor nozzle ripping of the the surface. I attempted to reprint (Multiboard large bin) several times, but repeatedly received "stuck filament" notifications within minutes of starting each print. Assuming the PETG swap was mostly likely contributing to the issue, I tried heating the nozzle, which eliminated the stuck filament problem.
This issue notwithstanding, I have absolutely no regret in my purchase of the MK4S... not even when my doggo absconded and chewed up some of my parts during the build. But that was all my fault for attempting to multitask, lesson learned 🤔 ... again 😆
Anywhoo, hope this info helps others.
Heating the nozzle to its max allowed whatever PETG that remained in the nozzle to drip out.
Printer is back in action, completing the failed print as well as other large prints yesterday (1/13/2025)
RE: Keep getting a filament stuck message on my MK4S
I had exactly the same experience after upgrading from Mk4 to Mk4s. My first attempt was to change back to the Mk4 nozzle. During the change I noticed that the nozzle was a bit loose. So I tightened it. Since then it seems to work fine. But take it with a grain of salt as the repair is quite fresh (I did it today).
Next steps for me is to buy moment key to tighten it in more precious way and monitor situation. If I have any new findings I will keep the forum informed.
RE: Keep getting a filament stuck message on my MK4S
Same here MK4s upgrade. Turned stuck filament off and prints finish ok.
RE:
Keeped happening to me on random occasions, my suspicion was that the filament was bad.. but that's not the case
Switched for the MK4S from the 0.4 HF to the 0.6 HF nozzle.
The following things helped me to fix it:
- Increased Nozzle Temp by 10 degree for the normal layers, first layer stayed the same. The temperature dropped after the first few layers when the printer got faster, so watch the temp
- avoid to use the "Grid" infill, Honeycomb works fine. Had the feeling that the "bumping" could trigger the error
- put my spool (esun pla) on rollers instead of the holder in the orginal prusa case
I also printed some tests too see if the printer is skewed or I get some errors after Z > 4mm, but everything was ok.
Printing now the third big model, no problem
-
RE: Keep getting a filament stuck message on my MK4S
I have a enclosure now. I am waiting for PETG. A full box of PLA printed perfectly like nobodys business.
So certainly there are a multitude of factors. Now with Prusa Core One there is a good upgrade path for a fixed enclosure too.
Either way I will let you know how the next PETG prints will go.
RE: Keep getting a filament stuck message on my MK4S
I’m almost certain my issue with this was environmental. It didn’t start until after the upgrade to MK4S, but I also ordered that upgrade kit as part of my Black Friday order; right when it started to cool down as we went into December. And my printer was in the garage. I moved it into my office a couple weeks ago and haven’t had an issue since.
I said almost certain because I also had an x-axis linear bearing that was clicking during travel at the same time. I took it off and cleaned it out and it stopped clicking, but didn’t have any large prints after that before moving it into the office, so can’t be sure it wasn’t involved.