What is happening here?
Brand new Prusa Core One (Factory assembled) and Ive had one successful print off of it. I have attempted to print this part now 6 times. Different Prusa slicer settings (with supports, without supports, 10mm, 15mm, 20mm, 25mm) All fail. This is the tool box listed on Printables that goes into the side compartment of the Prusa Core One. I've run a benchy and the crazy fast benchy from the thumb drive that comes with the printer with minimal issues, but they didn't look as good as I expected. For a new machine with less than 5 hours print time on it, it's kind of disappointing. I've reverted to my Mk3S+ for now printing some of the other parts of this build (WITH NO PROBLEMS), but some are too large and need to be printed on the Core One.
Just a note: The first layer prints beautifully, nice adhesion and smooth surface. Then when the additional layers get added, it starts to sound like crap like it's dragging and then after a couple hours looks like the above.
I have recalibrated the printer as far as I can tell. It went through the whole process where I had to touch the print head and all that, and reran the print to the same messy outcome.
Any help would be appreciated.
RE: What is happening here?
Here is the first layer of the same print above
RE:
Wet filament. Needs to go into a filament dryer. If you don't already own one I recommend you do.
- Bob Marley
RE: What is happening here?
BTW, what type of filament is this? Is it Nylon (PA)?
- Bob Marley
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Hi, I do own one for my MK3S+, but I don't think it would reliably work for the Core One. This is Prusament PLA - Galaxy black (the roll that came with the Core One.
RE: What is happening here?
It won't matter. If it can maintain 50C for around 6hrs then that's enough.
- Bob Marley
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Man! There’s gotta be something else, are we sure it’s the PLA filament. Here is a NEW roll, stayed in my dry box overnight (8+ hours) with a humidity of 44% (I live in Florida - it’s ALWAYS humid). Also, all of my other prints on my MK3S+ lived in this same environment and had no issues printing.
Can it be anything else?
RE: What is happening here?
Could be a problem with this filament or/and something else. Please upload here a zipped file of your *.3mf project so we can see your print settings
RE: What is happening here?
Here you go. I got it off Printables.
https://www.printables.com/model/1199587-prusa-core-one-dry-box-mod
RE: What is happening here?
Here you go. I got it off Printables.
https://www.printables.com/model/1199587-prusa-core-one-dry-box-mod
A dry box does not dry out filament. It just prevents it from collecting moisture as quickly as it would sitting out in the open air. Damp filament going into a dry box will still be damp when you take it out again. It needs to go into a dryer first. Especially if you live in a humid environment. As for brand new roll of filament, straight from the vacuum bag? I've had to dry it for 8hrs before it was usable. Here is an example. The test object on the left was printed immediately after removing a brand new roll of TPU filament from the sealed vacuum bag and the on the right is the same object after drying the filament for 8hrs.
- Bob Marley
RE: What is happening here?
Okay, purchased a dryer. Had it dry PLA for 8+ hours at 50°C
ran the filament through a tube directly from dryer to Core One…same outcome!!!
RE:
Buying the filament dryer regardless was a good decision. You will most definitely need it.
As for the photos it doesn't look like the same outcome. The first photos (at the beginning of the thread) was clearly due to, in part, to damp filament. The last photo to me looks like a clogged nozzle. Sometimes this can happen if (for example) you set your Printer profile to a high flow nozzle but you don't have a high flow nozzle installed.
Also, it would help if you could zip your .3mf project file (exported from PrusaSlicer) and attach it here.
- Bob Marley
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Here you go, they are attached.
RE: What is happening here?
Here you go, they are attached.
As far as the nozzle, its the one that came with the printer...so I'm assuming the .4 HF.
I'm still thinking the nozzle is clogged. Can happen if you push damp filament through it. Do you have another nozzle you can test with? If not you should because those brass nozzles will eventually wear out. Try doing a cold pull.
BTW, in my opinion, that dry box is not worth the trouble. I added an extra gasket around the rim but was never able to get the RH to a decent level (staying within -10% of ambient RH. It was also a PITA to have to use the different adapters for different spools. I just find it much easier instead to print from an external dry box
- Bob Marley
RE: What is happening here?
One more thing, check the idler tension screws. Perhaps the filament is slipping in the extruder gears. Try tightening by 1/8 of a turn.
- Bob Marley