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Small holes in first layer where lines meet  

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3dstuff
(@3dstuff)
Eminent Member
Small holes in first layer where lines meet

Hi all,

I'm having a problem on the first layer. See images.

What I did:

Flow on the MK3 is raised from 95 to 100.
File is sliced with slic3r. First layer extrusion width is raised from 0.42 to 0.45 (could this be the problem?). Overlap is default 25%. Part is printed in PETG.

Anybody an idea what I could try next?

Postato : 04/08/2018 9:53 am
toaf
 toaf
(@toaf)
Noble Member
Re: Small holes in first layer where lines meet

im guessing its getting messed up from the circles right? can you print one flat one layer with no problems? I swear when it circles something it spits filament at a higher rate.

I have a Prusa,therefore I research.

Postato : 04/08/2018 10:31 am
3dstuff
(@3dstuff)
Eminent Member
Topic starter answered:
Re: Small holes in first layer where lines meet

When I print a simple square first layer, that is without circles in it, it does a good job. Sometimes I get small holes around one of the edges but not as much as with the circles in it.

Postato : 04/08/2018 10:37 am
toaf
 toaf
(@toaf)
Noble Member
Re: Small holes in first layer where lines meet

maybe shell thickness?

I have a Prusa,therefore I research.

Postato : 04/08/2018 11:29 am
RufusClupea
(@rufusclupea)
Reputable Member
Re: Small holes in first layer where lines meet

I get the same thing around curves; circles, lettering, etc. wherever perimeters adjoin top/bottom layer infill.
I assumed it was just a glitch/quirk of the technology.

Could (hang on...) Infill/perimeters overlap (Advanced Print Settings) have anything to do with it?

That's "MISTER Old Fart" to you!

Postato : 04/08/2018 4:30 pm
bobstro
(@bobstro)
Illustrious Member
Re: Small holes in first layer where lines meet


[...] Could (hang on...) Infill/perimeters overlap (Advanced Print Settings) have anything to do with it?
Yes, very possibly. I have Print Settings->Advanced->Overlap->Infill/perimeters overlap set to 25%.

My notes and disclaimers on 3D printing

and miscellaneous other tech projects
He is intelligent, but not experienced. His pattern indicates two dimensional thinking. -- Spock in Star Trek: The Wrath of Khan

Postato : 04/08/2018 9:55 pm
RufusClupea
(@rufusclupea)
Reputable Member
Re: Small holes in first layer where lines meet



[...] Could (hang on...) Infill/perimeters overlap (Advanced Print Settings) have anything to do with it?
Yes, very possibly. I have Print Settings->Advanced->Overlap->Infill/perimeters overlap set to 25%.

That's where mine is, so it must be a default setting. I may try bumping it to 30-33% next time.

That's "MISTER Old Fart" to you!

Postato : 05/08/2018 1:21 pm
bobstro
(@bobstro)
Illustrious Member
Re: Small holes in first layer where lines meet


[...] That's where mine is, so it must be a default setting. I may try bumping it to 30-33% next time.
I just went through my print setting presets, and I do have it adjusted depending on layer height. At 0.32mm I have it up to 50%.

My notes and disclaimers on 3D printing

and miscellaneous other tech projects
He is intelligent, but not experienced. His pattern indicates two dimensional thinking. -- Spock in Star Trek: The Wrath of Khan

Postato : 05/08/2018 7:19 pm
3dstuff
(@3dstuff)
Eminent Member
Topic starter answered:
Re: Small holes in first layer where lines meet

Thx for the replies!

Gonna try that to, after I fixed my printer, while replacing the printed parts with the new versions I broke a cable of the heater cartridge.....stupiddddd!

Postato : 06/08/2018 12:30 pm
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