Cura Can't print Square blank spaces

[RogueWave 15]

Tried to print a grid pattern for Archaeology survey but Cura filled in the spaces, and should Not.....

Same error on the latest release and the new beta

Nozzle 0.8

S5 latest Firmware installed

 

 

 

[ahoeben 1,987]

Without seeing the model it is hard to tell for sure, but chances are the model is "non-manifold", which confuses Cura. Basically Cura looses track of what is "inside" or "outside" the walls of the structure. I always thinks this is a good explanation:

https://github.com/Ghostkeeper/SettingsGuide/blob/master/resources/articles/troubleshooting/missing_parts.md#non-manifold-meshes

 

Your model would need to be "repaired". 3d Builder, which comes with Windows 10 and 11, often does a decent job at repairing meshes (but it too can get confused about what you actually meant the model to be like).