RE: Immediately severely clogged after only 2 test prints
It's the same here. I printed my first parts in PETG and everything was fine. Then I switched to PLA and the first print clogged the original 0.4 nozzle. I used the default settings and the generic PLA profile. Luckily the filament broke off just above the nozzle and I had a 0.6 nozzle on hand so I could continue printing. The 0.4 nozzle is still clogged, heating it up to ~260°C hasn't helped so far. I've never had the problem with my other printers that I couldn't clear the nozzle by heating it up and pushing the filament through. I have also had no problems with clogging with the 0.6, although I have also used standard settings here. The printer is in the basement at ~15°C room temperature, so cooling should definitely not be a problem.
RE: Immediately severely clogged after only 2 test prints
What filament were you using?
I'm having this exact same problem printing Azurefilm Matte HS PLA using the generic PLA, and lowering the temp after unclogging the nozzle didn't solve the issue with this filament as the nozzle got clogged again.
RE: Immediately severely clogged after only 2 test prints
Do you guys use any filament dust filter? The dust, which then burns in the nozzle, is the main source of clogs. Especially with HF nozzles.
I haven't experienced any nozzle clog since I have started to use filament dust filter years ago.
RE: Immediately severely clogged after only 2 test prints
Do you guys use any filament dust filter? The dust, which then burns in the nozzle, is the main source of clogs. Especially with HF nozzles.
I haven't experienced any nozzle clog since I have started to use filament dust filter years ago.
Interesting point ... I had to look it up what 'dust filters' are so the answer is no :p
What kind are you using ? I see alot of remarks that either have issues with sponge materials then clogging up and/or question its effectiveness.
After adjusting my PLA material settings in Slicer, I haven't encountered the clogging problem again. I noticed also that the 'display name' in the drop down box on the main screen is actually different then the name one chooses in the material subscreen. There the name clearly indicates the PLA settings are for core HF. On the main screen the PLA name is exactly the same as for my MINI so hence the source of the confusion and error .. there was visible not any indication that I had to change the PLA as both displayed 'General PLA'.
I did have 2 blue screen dumps but that's another thread I suppose 😛
Kind Regards,
Steven
RE: Immediately severely clogged after only 2 test prints
I use this one: https://www.printables.com/model/43403-filament-dust-filter-parametric With pieces of cheapest plastic sponge for washing dishes. Sometimes I clean the dust accumulated inside with a stiff paintbrush.
RE: Immediately severely clogged after only 2 test prints
No, I don't use dust filters for my filament. And my printers are in the basement near my “woodworking area”. I do occasionally clean out the dust, but I have never had such a clogged nozzle on any other printer (equipped with e.g. Revo HF nozzles), and the PLA filament I had the problems with came directly from one of the other printers. So I can definitely rule that out as the cause in this case.
Do you guys use any filament dust filter? The dust, which then burns in the nozzle, is the main source of clogs. Especially with HF nozzles.
I haven't experienced any nozzle clog since I have started to use filament dust filter years ago.
RE: Immediately severely clogged after only 2 test prints
I am having the same issue I think. On my second print I started hearing clicking and then noticed no plastic (PLA) coming out of nozzle. I had no time to debug and won't until the weekend when I will contact chat support. Bummer that this seems to be a problem for a lot of people.
RE:
Long time Prusa owner here (5+ years).
Exactly the same problem here. 3 different PLA rolls, Prusament and 2 others. Core One factory assembled. I get clogs on 70% of longer prints. I have needed to do so many cold pulls with the hotend outside the nextruder in the last week that I have now managed to damage my hotend cable I think, It gives a red screen and a warning and the hotend does not warm up anymore. I am PISSED. I have no problems with clogging on my MK3S+ with MMU3 using the same filaments, in the same room, same temp, same "dust". I am returning this shit printer if this does not get fixed, I paid 1300 euros for a printer I can't use.
PS. I am using a dust filter. No improvement whatsoever.
RE: Immediately severely clogged after only 2 test prints
Got mine set up yesterday and ran into this issue today. It wasn't terrible to fix, I pulled the nozzle, heated it up while it was just hanging there, grabbed the silicone sock with some hot hands, and tugged on the little piece of filament sticking out the end with pliers and pulled it right out. I'm printing with 3DXTECH ASA.
RE: Immediately severely clogged after only 2 test prints
The only clogs I've ever had we solved by either increasing the hot end temperature or by running some "Printer Floss" through the printer as some old stings of filament were stuck in the hotend somewhere. One time even that didn't work so I printed with a hotter filament with the nozzle set 10 degrees higher and it came out with a string of a different colour stuck to it!! Worked fine ever since. Is where you're printing particularly cold? That can make a difference. 3D printing is getting very advanced but there is still an element of hands-on needed a lot of the time as everybody is in a different environment.
RE: Immediately severely clogged after only 2 test prints
The only clogs I've ever had we solved by either increasing the hot end temperature or by running some "Printer Floss" through the printer as some old stings of filament were stuck in the hotend somewhere. One time even that didn't work so I printed with a hotter filament with the nozzle set 10 degrees higher and it came out with a string of a different colour stuck to it!! Worked fine ever since. Is where you're printing particularly cold? That can make a difference. 3D printing is getting very advanced but there is still an element of hands-on needed a lot of the time as everybody is in a different environment.
No doubt, I'm coming from an i3MK3S with an MMU2 so I'm not too concerned about it. I'm printing at 265C nozzle / 110C bed / min 40C chamber / ~21C room temp using the 0.15mm Structural preset with the only changes being 4 perimeters vs 2 and gyroid infill vs grid. It certainly seems like it could be a temp issue. Almost as if it's feeding filament so fast it can't squeeze it out the nozzle that quick and it snaps.
I ran 4 pcs of the first file with no trouble. This break was on a different part so I'll run it again and see what shakes out.
RE: Immediately severely clogged after only 2 test prints
As an update on my clog problem, I got some good chat support over the weekend and cleared it with a cold pull. It was the first cold pull I have ever had to do. My MK3s has been printing for years and never had a nozzle clog. I was printing at the lowest heat setting for the filament I was using (some Jesssie PLA) which has been my practice and never caused a problem. I am thinking perhaps the nextruder works better at higher end of temperatures. I made a small test print afterwards which worked fine at 230 degrees. More printing will happen this weekend and I'll see how it goes. One thing I will say is that doing the cold pull was quite tricky with the enclosure in the way (I have large hands). I am going to have to practice removing the top panel.
RE: Immediately severely clogged after only 2 test prints
I can’t believe they are telling us this is not a PLA machine, mine is not a PLA machine, or a PETG machine either.. I can’t print anything on it without failing. Mine is a door stop at this point. I have done all the troubleshooting that I can think of, I have owned Prusa kits Mk3s+ upgraded to Mk4s and never had these problems. Right out of the box mine won’t print. I am gone for a few days, and my husband is not a tech geek so he is not touching it, but when I get back I will get serious about calling Tech support. I think I have a lemon, but who knows. If i was not so old, I would pick it up and throw it as far as I can, but for me that would just be nudging it a bit across the table. Hope they help you. I read these groups so I can get ideas on what to look for on mine.
Jo
RE: Immediately severely clogged after only 2 test prints
Since my last post I have gained some experience, the printer has been running almost continuously (during the day) for days.
Here is a short summary
- First prints with the standard 0.4 HF and PETG -> all fine
- First print with the standard 0.4 HF and PLA -> very bad clogging
- Switched to E3D Obxidan HF 0.6 -> same PLA and PETG -> all fine
Since my standard 0.4 HF nozzle is still clogged and I couldn't get it free, I ordered a new one. I noticed that there are two different 0.4 HF nozzles. The cheaper CHT (which is installed from the factory) and the more expensive E3D HF (brass). I then opted for the E3D. It has now been installed for days and runs without any problems with the same PLA and the same profile that had previously caused the clogging.
I also noticed that the head of the nozzle (hexagonal part) is much longer on the E3D nozzle than that of the CHT.
Could it be that the E3D simply has more space for larger channels and is therefore less prone to clogging? Just a thought..