RE: Immediately severely clogged after only 2 test prints
I haven't experienced any nozzle clog since I have started to use filament dust filter years ago.
I had only two clogs in my maker's life.
The first one was back in 17 and was caused by the foam of my dust filter (the exact same you posted!) that started to desegregate due to the filament rubbing over time. It was challenging to clean-up because the burnt foam is more sticky on the nozzle than on the filament. It took me about a dozen of cold pull to get it clean, I never ever used a dust filter since.
The second clog was during the 20s lockdown (😷) and was due to a crumb of cardboard, detected by the machine, solved by a single cold pull. Never experienced clog since, I often think that I am lucky when I look at the dust on some of my spools. 🤭
Filament breaking is another story. It looks like here peoples are facing to filament snapping, not a real clog. I noticed that the portion of the filament that has been dented by the extruder becomes more brittle when straightened. It is a general observation, not specific to the CORE One. It's like a pre-cut packaging, without this small notch you almost can't open it or you need to bite the plastic with your teeth.
I'll be curious to know if the new unload procedure from the recent firmware has worsen this issue?
RE: Immediately severely clogged after only 2 test prints
I too am having issues with clogs using my brand new Core One using stock settings. My third print on the Core One stopped sending out filament with a loud clicking sound. After reading the comments here, I took a look at the internals and found the Galaxy filament had snapped. More troubling, the intake drive thingy (sorry) is already showing signs of chipping from the Galaxy PLA! Same issue with PETG as well -- I've started trying to use the standard-flow nozzle in my settings hoping it will reduce the issue.
I love Prusa and what it stands for, but I'm really bummed out that my new printer is having issues out of the box!
RE: Immediately severely clogged after only 2 test prints
Here's a photo of the wear I described above
RE: Immediately severely clogged after only 2 test prints
More troubling, the intake drive thingy (sorry) is already showing signs of chipping from the Galaxy PLA!
Hmm, that looks disconcerting in a new printer. Is it really the metal teeth wearing off, or could it be chips of glittery plastic sitting between the teeth and on their flanks? Maybe try whether you can push them away with a wooden toothpick or (if you happen to have one around) a very small brush with brass bristles.
Are the idler screws adjusted to spec in your Core One, or are they possibly too tight?
RE: Immediately severely clogged after only 2 test prints
Sigh. I am in the same boat. Printed several kg of PLA, PETG, and some ABS. Decided to try the Galaxy black that was included and snap, with no bits hanging out that I can tug on...
RE: Immediately severely clogged after only 2 test prints
Can't you just heat the nozzle and push it through?
RE: Immediately severely clogged after only 2 test prints
Can't you just heat the nozzle and push it through?
Yep. I clogged my 0.25 nozzle a few times now (but I just love the results). What worked was to set the print fan to 50%, open the extruder lever, set the nozzle to 270°C for PLA and then go to "move axis" and slowly turn the Extruder "axis" clockwise, while pushing the filament (still loaded and on the spool holder).
Takes a bit of careful force and doesn't smell great, but works in most cases. Without the print fan, it smells a lot more and it "blobs more".
As soon as the blob is out, set the temperature to 0° and keep the filament moving until the nozzle is below around 220°C, to not risk the next blockage due to heat creep.
RE: Immediately severely clogged after only 2 test prints
I pulled the extruder, heated it up to 270 and the filament expanded enough to pull out the top. Unfortunately it left a lot of crud inside that is resisting new filament.
RE: Immediately severely clogged after only 2 test prints
Managed to get a drill bit down into the tube and ground out a lot of the crud. Got some clean PLA to run through it to release the remaining as smoke. Just did 3 PLA and 3 ABS prints with no issue now. I really think it was that Galaxy Black that caused the problems, evidenced by this earlier progression of print failures:
RE: Immediately severely clogged after only 2 test prints
Well let's add another clogged nozzle to the team same problem just finished to assembled my kit and get nice printer with Prusa filament but once I switch to Galaxy Glitter start clogging, another thing the filament finished and the printer did not stop pfff
As were could see is just break in two bottom and up
