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Nathan CHDNS
(@nathan-chdns)
Active Member
Little bubbles

Hey,

I recently finished building my i3 but i have an issue : I have small bubbles that are on the sides (ridges) of my prints.

What could it be ?

Posted : 27/03/2020 6:04 pm
karl-herbert
(@karl-herbert)
Illustrious Member
RE: Little bubbles
Posted by: @nathan-chdns

Hey,

I recently finished building my i3 but i have an issue : I have small bubbles that are on the sides (ridges) of my prints.

What could it be ?

Hello,

it's hard to judge without pictures!

Statt zu klagen, dass wir nicht alles haben, was wir wollen, sollten wir lieber dankbar sein, dass wir nicht alles bekommen, was wir verdienen....
Posted : 27/03/2020 10:23 pm
Nathan CHDNS
(@nathan-chdns)
Active Member
Topic starter answered:
RE: Little bubbles

@karl-herbert

Here are the picture.

Posted : 28/03/2020 10:56 am
Neophyl
(@neophyl)
Famed Member
RE: Little bubbles

Those look like the seam, where the layer starts and stops.  You will always get some form of seam though with fdm.  You can control where ity appears to a certain extent by changing the slicer settings for seam position and by default it will try to hide the seam in a corner but with no corners like on your part thats not possible.  There are things you can do to minimise them though like calibrating your extruder steps, tweaking your filament profiles to match the actual filament size etc.

I will say though that those seams look particularly bad, in fact the whole part looks rough.  Might want to do the extruder calibration and check your belt tensions and bearing smoothness etc.

 

Bob has some very good notes here http://projects.ttlexceeded.com/3d_printing.html

Posted : 28/03/2020 11:14 am
karl-herbert
(@karl-herbert)
Illustrious Member
RE: Little bubbles

@nathan-chdns

I would also check the settings for Linear advance. https://help.prusa3d.com/en/article/linear-advance_2252

Here are the settings for the seam position:

I would prefer "aligned".

Statt zu klagen, dass wir nicht alles haben, was wir wollen, sollten wir lieber dankbar sein, dass wir nicht alles bekommen, was wir verdienen....
Posted : 28/03/2020 12:36 pm
Nathan CHDNS
(@nathan-chdns)
Active Member
Topic starter answered:
RE: Little bubbles

@neophyl

I think it come from my new filament because with the prusament I received, all was perfect.

Posted : 30/03/2020 7:07 am
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