Unexplained misprint in simple pieces

[MarcelloMazza 1]

By printing simple totally smooth pieces in some layers both in preview and in printing, the print deviates slightly from the natural line of the vertical wall of the piece. If there are no holes in the same piece, everything is correct, otherwise the error occurs.
I really don't know how to fix it.
The bug occurs in Cura 5.4.0 beta and 5.4.0

Cavallotto lungo.3mf Cavallotto lungo.stl

[ahoeben 1,955]

Reset "Hole horizontal expansion" to 0

[MarcelloMazza 1]

Thanks for the suggestion, but the error remains

[ahoeben 1,955]

Could you attach a project file?

Use File -> Save project...; the 3mf you attached in your opening post seems to have been created with File -> export...

A project contains the model and your settings; an exported model only contains the model (geometry).

[MarcelloMazza 1]

Here is the file from "save project"
Thank you

Cavallotto lungo - 2 pezzi.3mf

[ahoeben 1,955]

I don't fully understand why exactly, but lowering the `Maximum Resolution` setting (under `Mesh Fixes`) to 0.2 or lower seems to fix the issue for this model.

 

See https://github.com/Ghostkeeper/SettingsGuide/blob/48b3c7902c6401cf43fffd14795947c74cd02275/resources/articles/meshfix/meshfix_maximum_deviation.md for more information about the setting

Edited July 7, 2023 by ahoeben

[MarcelloMazza 1]

Perfect: problem solved. Many, many thanks for the help.