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Bottom and top layer very fragile  

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Keanu
(@keanu-2)
Active Member
Bottom and top layer very fragile

hello, i have already printed some pieces like that and it never happened before, everytime I print this piece it always comes very fragile and everytime I lower the offset Z to see if it gets better but it doesn’t. Can someone please help me fixe this

IMG_2603

 

Posted : 24/05/2024 2:38 pm
Diem
 Diem
(@diem)
Illustrious Member

Please save your project as a .3mf file

Files > Save Project as

Zip the .3mf and post it here. It will contain both your part and your settings for us to diagnose.

Cheerio,

Posted : 24/05/2024 6:49 pm
Keanu
(@keanu-2)
Active Member
Topic starter answered:
RE: Bottom and top layer very fragile

project

Posted : 24/05/2024 8:13 pm
Diem
 Diem
(@diem)
Illustrious Member

It depends what you mean by 'fragile', the video doesn't help ... but if you mean that the part flexes and has poor top surfaces then you might try setting infill at a higher value, 5% is not enough, both Adaptive Cubic and Lightening would support better without using too much filament.

Cheerio,

Posted : 25/05/2024 8:12 am
Keanu
(@keanu-2)
Active Member
Topic starter answered:
RE: Bottom and top layer very fragile

It’s like since last week I don’t seem to get a good surface for the bottom layer and the top layer, it has big holes in it 

Posted : 25/05/2024 12:00 pm
Diem
 Diem
(@diem)
Illustrious Member

It’s like since last week I don’t seem to get a good surface for the bottom layer and

Run the built-in first layer 'Z' calibration and show us the result *on the print sheet*.

the top layer, it has big holes in it

As above, 5% triangular fill is not enough.

Cheerio,

Posted : 25/05/2024 3:30 pm
Keanu
(@keanu-2)
Active Member
Topic starter answered:
RE: Bottom and top layer very fragile

I also tried it with 15% and it was still the same with the holes on the top layer.
Thank you for replying so fast and trying to help.:)

Posted : 25/05/2024 4:27 pm
Diem
 Diem
(@diem)
Illustrious Member

I also tried it with 15% and it was still the same with the holes on the top layer.

Still triangles?  They're not ideal with flat surfaces.

Your first layer 'Z' offset is a fraction low - back off until those ripples disappear, atm your nozzle is scraping up filament that has squished sideways and this excess has to go somewhere.

Cheerio,

Posted : 25/05/2024 10:57 pm
Keanu
(@keanu-2)
Active Member
Topic starter answered:
RE: Bottom and top layer very fragile

With grid

Is the offset Z now better? I lowered it from -1.250 to -1.170

Posted : 26/05/2024 1:27 pm
Diem
 Diem
(@diem)
Illustrious Member

That's an improvement and will probably work but you could go a little farther.

Cheerio,

Posted : 26/05/2024 6:40 pm
Eef
 Eef
(@eef)
Reputable Member
RE: Bottom and top layer very fragile

Here is my favorite again: https://www.printables.com/model/251587-stress-free-first-layer-calibration-in-less-than-5/files  

We will do what we have always done. We will find hope in the impossible.

Posted : 26/05/2024 8:37 pm
Keanu
(@keanu-2)
Active Member
Topic starter answered:
RE: Bottom and top layer very fragile

does this look normal? It’s 10% infill with adaptive cubic

Posted : 27/05/2024 12:13 pm
Keanu
(@keanu-2)
Active Member
Topic starter answered:
RE: Bottom and top layer very fragile

I canceled the print because it’s still very strange.

Posted : 27/05/2024 2:42 pm
Diem
 Diem
(@diem)
Illustrious Member

Dry the filament for a few hours and try again.

Cheerio,

Posted : 27/05/2024 7:53 pm
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