Blobbing issue after a few layers for a few layers
Hello,
I am having blobbing issue after a few layers for a few layers and I am not sure what is causing it
There are 6 perimeters and it only happens for some models
All these prints except for the vase mode have the same print parameters (60 bed, 200he) and it's amazonbasics satin PLA
I also tried to change printing the perimeters first but the outcome is the same
Using an air pump for cooling, which seem to work pretty good. I tried adding a big fan above the printer when reprinting one of the small models with not change in the result
Any idea ?
I will try with an other roll of filament but I am not sure that's the issue as first layers are ok and then the rest of the print is ok too
Thanks
20 Replies
Forgot the %sign in fill overlap ?
That wouldn't explain vase mode issues though
Or overextrusion in general
passive-yellowOP•3y ago
The vase mode is actually fine
and other geometries have no problems either
Then check the infill overlap, if you accidentally specified mm instead of %, it will go past the walls
passive-yellowOP•3y ago
I don't think I changed that setting, will check thanks
Should be visible in slicer gcode preview
passive-yellowOP•3y ago
passive-yellowOP•3y ago
and this should show one of the layers that fails, so basically solid
maybe over extrusion but then I don't understand why it fixes itself later
and why the layers before are fine too
Wait... The walls are straight?
You have a huge bulge
passive-yellowOP•3y ago
passive-yellowOP•3y ago
maybe the initial overhang is too steep, but I quickly made a similar shape with 72degrees overhang and it seems to print more or less ok, no bulging anyways
Could be the pla curling up
How does the print look higher up?
passive-yellowOP•3y ago
it looks fine
it is just these few layers, no issue before, no issue after
I was thinking it could be some leadscrew issue or some binding, but then with other geometries the problem is not visible
I wonder if it could be linked to cura's new enging with varying line width
maybe conflicting with pressure advance or something
I meant the preview
passive-yellowOP•3y ago
oh sorry
passive-yellowOP•3y ago
its only solid layers
but sometimes there is thin lines or wide lines
doesnt seem the overhang is the issue or the cooling (even though it is not enough cooling for this steep overhang)
passive-yellowOP•3y ago
Yeah over 60% is difficult
passive-yellowOP•3y ago
with a raft
it seems there is less bad layers, maybe the same size as the raft ? still can't figure out what is going on
Why is the raft shit? That doesn't have overhangs right?
Did you watch it print?
passive-yellowOP•3y ago
for the raft it was just the beginning that had no material I think and big layer lines
after tryuing disabling pressure advance and other, I tried slicing with prusa slicer instead
need to adjust some settings but the artefacts are not present