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Poul-Erik Hagemann
(@poul-erik-hagemann)
Active Member
PETG problems

https://photos.google.com/photo/AF1QipP636Y_xqeEQiUlRjO9HusctUAlILX51ehG4Zwk

https://photos.app.goo.gl/sfFgW56uZnJdy1M49

First layer quite ok, but then it starts to make a lot of troubles.. Any ideas.  Filament PM PETG, 15 % moist  Sometimes on 3.rd. layer, sometimes infill.. Whats wrong?

 

 

This topic was modified 3 weeks ago 2 times by Poul-Erik Hagemann
Posted : 17/01/2025 10:01 am
Diem
 Diem
(@diem)
Illustrious Member

Pictures hidden behind log-in wall.  Please post them here (Add Media) for inspection.  Dry your filament and try reprinting first...

For more detailed analysis 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 : 17/01/2025 12:34 pm
Poul-Erik Hagemann
(@poul-erik-hagemann)
Active Member
Topic starter answered:
RE: PETG problems

Thx, i'll try to get the pictures uploaded

 

Posted : 17/01/2025 3:19 pm
Poul-Erik Hagemann
(@poul-erik-hagemann)
Active Member
Topic starter answered:
RE:

First layer is looking fine

This post was modified 3 weeks ago by Poul-Erik Hagemann
Posted : 17/01/2025 3:20 pm
Brian
(@brian-12)
Honorable Member
RE: PETG problems

Looks like underextrusion, raise nozzle temp 10 degrees.

Posted : 17/01/2025 8:27 pm
Diem
 Diem
(@diem)
Illustrious Member

What is the profile in the lower layers?  Please supply the zipped .3mf as above.

Cheerio,

Posted : 17/01/2025 8:52 pm
Poul-Erik Hagemann
(@poul-erik-hagemann)
Active Member
Topic starter answered:
RE:

Ohh, forgot the file..sry.

Here it is. (Hope it works, having trouble attaching)  

This post was modified 3 weeks ago 2 times by Poul-Erik Hagemann
Posted : 18/01/2025 8:32 am
JoanTabb
(@joantabb)
Veteran Member Moderator
RE: PETG problems

the project file must be ZIP compressed

regards Joan

I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK

Posted : 18/01/2025 9:50 am
Poul-Erik Hagemann
(@poul-erik-hagemann)
Active Member
Topic starter answered:
RE: PETG problems

It is, but seems like it does'nt get accepted when pressing save.

Posted : 18/01/2025 10:06 am
JoanTabb
(@joantabb)
Veteran Member Moderator
RE: PETG problems

That is very odd... 

Joan

 

I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK

Posted : 18/01/2025 10:09 am
Poul-Erik Hagemann
(@poul-erik-hagemann)
Active Member
Topic starter answered:
RE: PETG problems

Yes, I also find it a bit odd.

Regards

Poul Erik 

Posted : 18/01/2025 10:41 am
Poul-Erik Hagemann
(@poul-erik-hagemann)
Active Member
Topic starter answered:
RE: PETG problems

One more try with the zip

Posted : 18/01/2025 10:47 am
Diem
 Diem
(@diem)
Illustrious Member

I don't use HF nozzles so I can't comment on profiles for them 'though I doubt you'd see much difference for small parts like that.

The odd perimeter adhesion *might* be reduced by a thorough print-sheet clean, and reducing/disabling your elephant's foot compensation might improve the edges too - and replace the grid infill with cubic 'though your print hadn't got that far...

The temperature increase @brian-12 suggests might also help although stepping up 5° at a time would be my approach.

Cheerio,

Posted : 18/01/2025 1:13 pm
Brian
(@brian-12)
Honorable Member
RE: PETG problems

I'm not near my computer till later tonight, but you should be running around 250° C for PETG with 240 for the first layer.  The Prusament profile is pretty much spot on.

I think like 70% of problems with the MK4S is that people use old filament profiles or the generic Prusa profile which isn't hot enough for the speeds the 4S runs.  That's why typically the first layer prints ok and when the speeds pick up the issues start.

The other option if you didn't want to run hotter is to lower the volumetric flow rate in the filament profile.  For whatever reason many people are scared to turn the temperatures up. 

Posted : 18/01/2025 2:39 pm
Ineal
(@ineal)
Estimable Member
RE: PETG problems

if i got get the wrong filament while open or is on this file "politeria PLA" used?

so i think the Problem is wrong slicer setting on Filament.

Posted : 18/01/2025 4:21 pm
Poul-Erik Hagemann
(@poul-erik-hagemann)
Active Member
Topic starter answered:
RE: PETG problems

Thx a lot. I'll give it a try with a bit higher temp.

Posted : 18/01/2025 9:58 pm
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