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3DFabian
(@3dfabian)
Active Member
Strange Top Layers

I have a Voron V0 and I want to use PrusaSlicer. Everything works finde only my toplayers are over extruded. I tried every option, but nothing helped. Whenever I want to print with more then two toplayer, the sclicer automaticly extrude more in this strange patterns (shown in screenshot). All four toplayer are looking like this. The speed, layer hight and width are the same everywhere, so the volumetric flow is representiv. The bottom layer dont show this pattern.

Does someone have an idea?

This topic was modified 3 years ago by 3DFabian
Posted : 29/12/2021 2:33 am
JoanTabb
(@joantabb)
Veteran Member Moderator
RE: Strange Top Layers

Hi Fabian, 
Have you got a line like this in your Custom Gcode start Gcode? 

it reduces the flow rate a little for certain layer heights. which effectively reduces the liklihood of over extrusion on upper layers

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 : 29/12/2021 2:59 am
3DFabian
(@3dfabian)
Active Member
Topic starter answered:
RE: Strange Top Layers

Hi Joan,

even if all the custom gcodes are empty, the problem remains.

Posted : 29/12/2021 3:09 am
3DFabian
(@3dfabian)
Active Member
Topic starter answered:
RE:

So. Now I set everything to the same speed and hight/width after the first layer and not only the top layer have a flow problem.

I compared every(!!!) setting with a default MK3S profile, which dont have the issue. Is this a bug?

This post was modified 3 years ago by 3DFabian
Posted : 29/12/2021 3:27 am
3DFabian
(@3dfabian)
Active Member
Topic starter answered:
RE: Strange Top Layers

The problem is even in the default Voron V0 profil, with deafult ABS and default print setting. So this have to be a bug, i guess.

Posted : 29/12/2021 3:45 am
Neophyl
(@neophyl)
Illustrious Member
RE: Strange Top Layers

Please attach a zipped up project file saved from Prusa Slicer.  with the 3mf we can see the same settings as you are using and check things out.  Without one is just guesses.

It must be zipped or the forum wont allow the file type.

Posted : 29/12/2021 3:26 pm
3DFabian
(@3dfabian)
Active Member
Topic starter answered:
RE:

There it is, but it is just all default, without skirt

 

Base

This post was modified 3 years ago by 3DFabian
Posted : 30/12/2021 12:19 pm
3DFabian
(@3dfabian)
Active Member
Topic starter answered:
RE: Strange Top Layers

So noone even tried? 

My workaround was to modifiy a mk3s profile, but I still have the issues, if I use the Voron profil with the same settings

Posted : 02/01/2022 9:14 pm
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