RE: Keep getting a filament stuck message on my MK4S
Yes, raising the temp helps slightly but only delays the problem, if you are lucky. Printing with PLA+, I've tried going up to 250 which is the upper recommended limit, and it still got the filament stuck error.
I've swapped the nozzle for a brand new one from Prusa and the problem went away completely. The previous nozzle only had about 20-30hs of printing with PLA, PLA+ and PETg, but after removing it and comparing it with the new one is shows signs of deformation around the hole. I have really no idea how that could happen, but it was obviously the cause of the problems. Filament was overextruding, leaving uneven layers that would then jam the filament when trying to print the next layer.
RE: Keep getting a filament stuck message on my MK4S
Yes, raising the temp helps slightly but only delays the problem, if you are lucky. Printing with PLA+, I've tried going up to 250 which is the upper recommended limit, and it still got the filament stuck error.
I've swapped the nozzle for a brand new one from Prusa and the problem went away completely. The previous nozzle only had about 20-30hs of printing with PLA, PLA+ and PETg, but after removing it and comparing it with the new one is shows signs of deformation around the hole. I have really no idea how that could happen, but it was obviously the cause of the problems. Filament was overextruding, leaving uneven layers that would then jam the filament when trying to print the next layer.
That's odd. No abrasive or silk filaments?
I've easily got over 1000 hours on the same nozzle printing PETG and it still looks pretty new other than being discolored.
RE: Keep getting a filament stuck message on my MK4S
Things like this are why I never mix filament types in nozzles. Rightly or wrongly, I just feel that getting different types of filament mixed up in a nozzle will lead to clogs. Luckily, with the advent of really easily swappable nozzle assemblies, I can begin to expand from just PETg to other types of filament.
Also, a distorted nozzle could easily come from the printhead hitting the build plate at some point. You many not have even noticed when it happened. Glad to hear the new nozzle fixed the problem.
RE: Keep getting a filament stuck message on my MK4S
Yes, no abrasive filaments, only PETg and PLA.
The nozzle did hit the build plate a few times at one point, because the thumbscrews were loose and it messed up with the loadcell. It damaged the PEI sheet noticeably on a few spots, so it might have been it. I guess maybe this combined with some particular defect on the nozzle that somehow passed quality checks? I don't know.
RE: Keep getting a filament stuck message on my MK4S
Same issue here, with Gridfinity bins in particular. I tried switching out the nozzle for the non-HF nextruder 0.4mm nozzle but see the same thing. I turned off stuck filament detection and now the prints finish, but there’s what looks like pretty severe overextrusion on the first few layers of the bin walls, particularly in the corners. It’s so bad that even with PLA and PETG, I’m getting warping on those corners, with them being pulled up and off the build plate(and there seems to be lots of stress on the top surface of the base, from those corners pulling it up).
At this point, I’m suspecting either a firmware or slicer issue. Unfortunately, debugging it will get really expensive really fast, with so much wasted filament.
RE: Keep getting a filament stuck message on my MK4S
Same issue here, with Gridfinity bins in particular. I tried switching out the nozzle for the non-HF nextruder 0.4mm nozzle but see the same thing. I turned off stuck filament detection and now the prints finish, but there’s what looks like pretty severe overextrusion on the first few layers of the bin walls, particularly in the corners. It’s so bad that even with PLA and PETG, I’m getting warping on those corners, with them being pulled up and off the build plate(and there seems to be lots of stress on the top surface of the base, from those corners pulling it up).
At this point, I’m suspecting either a firmware or slicer issue. Unfortunately, debugging it will get really expensive really fast, with so much wasted filament.
Try raising the nozzle temperature? Maybe 10 degrees. Excessive back pressure on the extruder can cause this message.
It won't help with warping. You'll either have to add a brim, or alter the part geometry to help with the warping.
RE:
Well, the warping bit is strange. It doesn’t look like something that’s happening for the normal reasons. On the MK4, I only ever saw warping with ASA/ABS, but these prints were PLA and PETG, and they were Gridfinity bins, which I printed plentifully in PETG before the upgrade without issues.
That said, one more variable that I haven’t checked: prior to the upgrade I was using Prusament but these were using Buddy3D(I ordered a bunch of rolls with the upgrade and wanted to try them). I’m surprised it’d perform so poorly, though.
Oh, and I did try raising the temperature, no dice.
RE: Keep getting a filament stuck message on my MK4S
If it can help someone, I just have the same issue. We spent 2h with support, and so far :
- I cannot print in .28 draft because it fails
- I cannot use "grid" because each time the nozzle "bump" on a small amount of pla that he deposited before, I considers it to be a filament stuck and stop printing.
So If I stay in rectilinear and in .25 max, it prints.
RE: Keep getting a filament stuck message on my MK4S
I started getting this too, but when it happens, I also hear a lot of banging, like the nozzle is whacking something on the print. I can feel plastic zits on the print and there’s buildup on the nozzle. I’m presuming something not quite right in the calibration is spurting out too much, and when the nozzle drags across that the load cell causes a freak out.
When someone asks you if you're a god, you say, "YES!"
RE:
Raise the nozzle temperature about 10 degrees. Looks like underextrusion.
I bet if you watch your nozzle temperature you'll see it dropping in fast sections. Raising the temperature will help mitigate this.
RE: Keep getting a filament stuck message on my MK4S
I had a similar issue with my MK4s kit after assembly, I tried a few things, so I’m not sure what specifically helped the most, but I believe the problem was the table I first used was pretty wobbly when printing the first benchy where I got the error mid-print (the printer really seemed to shake the table at times during the print). After moving the printer to a more stable table (and updating the firmware) I don’t think the problem has happened since.
RE: Keep getting a filament stuck message on my MK4S
I'm very new to 3D printing and I had the same issue so I started to change the nozzle to an obsidian nozzle and found that the high flow nozzle I installed when I upgraded my MK4 to a MK4S had come loose just a little bit stopped the stuck filament message after I tightened the nozzle.
RE:
Hello!
I have a MK4 which I upgraded to the MK4S and I just ran into the same issue.
It is a fresh Prusament Jet Black roll I use here. This happens to be very far into the print (like after 6 hours) and I have three failed prints.
Take what you will from that. The first print was the one using hexagon infill and I see yeah that was bad. It was a older prusament.
Changed to a new one. So I will now increase the hotend by 5C (Default 250) and disable the sensor. If this does look okay I will enable the sensor again and see how this goes.
Further I have to add that since going to the MK4S Filament changes extrude a ton of Filament. HighFlow indeed but not taken into account it seems.
RE: Keep getting a filament stuck message on my MK4S
I did also stabilize the location of my printer more. It was a bit wobbly.
Sadly I am already on the latest stable firmware. I made sure it stopped being wobbly on my third print.
I have to add that I never had this issue before and printing similar objects in size.
RE:
Hello!
I have a MK4 which I upgraded to the MK4S and I just ran into the same issue.
It is a fresh Prusament Jet Black roll I use here. This happens to be very far into the print (like after 6 hours) and I have three failed prints.
Take what you will from that. The first print was the one using hexagon infill and I see yeah that was bad. It was a older prusament.
Changed to a new one. So I will now increase the hotend by 5C (Default 250) and disable the sensor. If this does look okay I will enable the sensor again and see how this goes.Further I have to add that since going to the MK4S Filament changes extrude a ton of Filament. HighFlow indeed but not taken into account it seems.
You can tell from those photos that the nozzle is not hot enough. That's why it has all those different shades of black on it. I'd go at least 10 degrees hotter.
Are you using the Prusament filament profile?
RE:
Hello!
Yes I used the Prusament Profile which is why this surprised me.
After all I mentioned I will increase the default by 5C. Maybe the surroundings are that cold. I do not heat the place all that high.
Further it is still rather strange that this happened always right around the same spot on a 7 hours print. I would suspect it to clog way earlier.
Either way it runs right now and we shall see in 5 hours.
RE: Keep getting a filament stuck message on my MK4S
I can’t speak specifically for them, but too low heat was definitely the issue for me. I had to go another 10C over the profile, even for prusament, to print successfully. Seems the MK4S needs more heat(or is bugged in current firmware) than their profiles indicate.
RE: Keep getting a filament stuck message on my MK4S
I can’t speak specifically for them, but too low heat was definitely the issue for me. I had to go another 10C over the profile, even for prusament, to print successfully. Seems the MK4S needs more heat(or is bugged in current firmware) than their profiles indicate.
I think it might actually not be temperature related.
I re-enabled the clogging warning because it seems to trip where these issues show up.
Going 10C above literally makes it all gooo. I will stick to the default.
I will do a planetary gear adjustment and try 0,25mm. If this does work I will go 0,2 again and see.
RE: Keep getting a filament stuck message on my MK4S
I can’t speak specifically for them, but too low heat was definitely the issue for me. I had to go another 10C over the profile, even for prusament, to print successfully. Seems the MK4S needs more heat(or is bugged in current firmware) than their profiles indicate.
I think it might actually not be temperature related.
I re-enabled the clogging warning because it seems to trip where these issues show up.
Going 10C above literally makes it all gooo. I will stick to the default.
I will do a planetary gear adjustment and try 0,25mm. If this does work I will go 0,2 again and see.
Let is know what you find out. But the sheen and color should not vary that much. Usually when it does it's temperature and speed related because you'll notice on the long runs it gets duller because the extruder reaches full speed and the filament is spending less time in the nozzle, therefore not getting as hot, resulting in that dull appearance. Then on the short runs where it doesn't reach full speed the filament gets properly heated in the nozzle and has the normal shiny appearance.
In a perfect world you should see no variation in color across the entire surface. I find using input shaping is usually a balance, especially on the speed profile. I usually use only the structural.
Good luck.