Cura 5.4 toolpath issues in some layers.

[V3DPrinting 11]

Hi to all

 

I have some strange behavior with Cura 5.4 when slicing a model : some tool paths are not correct.

 

Model has no flaws (being wrapped under Fusion 360 to be sure)

 

Model have some sub meshes due to custom supports created as a part + modifier.

 

Preview and printed parts exhibit some deviations from the 3D model in some layers

 

No way to get rid of these flaws, that are not present in the model.

Here's the project file

 

EW50_STL_Fixed.3mf

 

Slicing the same model with the same parameters (when applicable) under Cura 5.1.1 is fine. But Tree supports are huge and lower quality.

 

 

Looks like a bug ?

 

Thanks for your feedback.

[V3DPrinting 11]

Hi again

 

I have also some slicing errors on another model. Mesh is also fine (STL has been created from Fusion 360 / Solid modeling and then rebuilt with Meshmixer to be sure there is no errors).

 

The model is a continuous extrusion of a profile in these areas, so it shouldn't have any shifting.

 

There is some sort of layer shifting, but in Cura. It happens with Cura 5.3 and 5.4.

 

 

Here's the project file

 

EW50_Support_Tablette_10_in_V3_Fixed.3mf

 

Thanks for your help

 

Best

 

[V3DPrinting 11]

@ Ulitmaker Support Team

 

I am digging out that topic which hasn't been answered by the community as I have again the issue with different projects with Cura 5.4

 

I would emphasis on the fact that the meshes don't have any reported issues from Cura or Fusion360 or Meshmixer.

Fixing them (wrapping or rebuilding) does not change any of the results below.

 

Here's the first project file.

 

EW50_1-25x-behuizing. x4.3mf

 

Sliced with Cura 5.4, there are some tool path issues (same issue on each part)

 

 

Same project sliced with Cura 5.3.1, no issues at all.

 

 

Here's the second project file

 

EW50_2-25x-deksel-original.3mf

 

The tool path issues with Cura 5.4

 

 

And the correct slicing with Cura 5.3.1 ....

 

 

This issue is critical as Cura 5.4 can no longer be trusted with some basic issues, though tree supports are a major advantage.

 

Can you please have an urgent look at this issue ?

 

Edited September 29, 2023 by V3DPrinting

[Slashee_the_Cow 271]

13 hours ago, V3DPrinting said:

This issue is critical as Cura 5.4 can no longer be trusted with some basic issues, though tree supports are a major advantage.

 

Can you please have an urgent look at this issue ?

 

It's already well known that Cura 5.4 has some slicing bugs. I'm pretty sure it's near the top of their to-do list.

 

Sometimes the problem can be mitigated by going into the print settings, Mesh Fixes > Maximum Resolution. 0.5mm is a good place to start and if that doesn't work try going down in 0.1mm increments, but this workaround can't be relied upon to work.

[V3DPrinting 11]

6 hours ago, Slashee_the_Cow said:

Sometimes the problem can be mitigated by going into the print settings, Mesh Fixes > Maximum Resolution. 0.5mm is a good place to start and if that doesn't work try going down in 0.1mm increments, but this workaround can't be relied upon to work.

 

@Slashee_the_Cow Thanks for the tip. I'll have a try on my current project.

 

As I'm running a business, for day to day work, I need to rely on a slicer which doesn't have these flaws.

 

I will have a look at the issue on Github.

[V3DPrinting 11]

@Slashee_the_Cow I saw that the issue is related to the bridge settings, and the trigger is the max resolution.

 

Thanks for the valuable tip.

[vasilp 0]

Hi, I have similar issues with Cura 5.4 ... even worse in my case (check attached screenshots).

I`m using generic printer profile as I have customized mine (Sapphire SP-05), so is based on default settings.

.stl is also provided for a reference.

Anyone has ideas how I can reduce those issues?

Pepo coin.stl

[ahoeben 1,951]

25 minutes ago, vasilp said:

Anyone has ideas how I can reduce those issues?

 

Yes, as mentioned above: Lower the Maximum Resolution value in Cura.