Hi, I’ve tried to print a model plane for my father. It’s this model, using this LW-PLA right after purchase.
As you can see in the image of this post, the print is going well until it reaches a certain layer, where the filament does not get deposited properly for the entire layer, only intermittently. The following layers then, of course, have the same problem and I get this failed print with these “frayed ends”. Additional attempts failed the same way at a similar layer count.
If someone has some experience with lightweight PLA (LW-PLA) and knows what can be done to solve this, I and my father would greatly appreciate the help.
Thanks in advance.
Edit: Additional info: I’m using the PrusaSlicer files from the linked page. Edit2: The printer is Prusa Mk4.
This looks like a clog caused by retraction.
Is it clogged when it finishes? Also, does the cooling change at this layer? Is there anything specific to this layer?
not sure, but looks like vase mode, where there shouldn’t be any retraction.
Something I haven’t seen suggested yet that has caught me up: a bad sdcard can corrupt an STL at a layer height and lead to this type of fault.
Try swapping the card while you’re testing other things to see if that helps at all.
First thing, just because it’s new from manufacturer doesn’t mean it’s dry. Don’t know lw off hand, but drying helps eliminate variables
If it’s always happening at the same layer I’m skeptical thatl it’s a drying issue. You try printing with a normal pla to see if it’s filament related even? If it is, agree with doing a temp tower. I’ve been doing that with most new filaments. Try slowing print speed too
Do you mean the exact same model but another filament like regular PLA? Other models with regular PLA is no problem.
I agree. Can you put the stl in the slicer and run thru the layers. See what happens around this height? I’ve had trouble with my prusa mk3 always shifting at the same height and it was a firmware issue. Happened out of the blue and a refresh fixed it.
@i_like_water i’ve printed this plane twice using the same filament (3D Lab Print PolyLight 1.0), on my Prusa i3 Mk3S+; once using the pre-sliced gcodes from 3DLP, and once sliced from the 3FM files.
If you’re using the gcode or 3MF files provided by 3DLP then the remaining variable is the filament itself.
3D Lab Prints filaments absorb moisture more than many othe PLA formulations. They recommend (on their Discord) to always dry new spools, and store them in a drybox.
