I’m trying to cut a volume mesh (generated with griddle) using a surface mesh (lithology remeshed with griddle), but the _MeshSplit command doesn’t seem to work. The volume is a closed mesh and it’s the first time I’m facing this issue.
This appears to be an issue with Rhino functionality, so I would first try restarting the application and see if that resolves the issue.
There are also some other things to consider when working with the _MeshSplit command.
Keep in mind what tolerance parameter you are using. If Tolerance=Literal, the issue could be due to the absolute tolerance of your model
In order to properly split, the “cutting” object must pass through the domain completely
When working with more complex geometries, it sometimes helps to first intersect the meshes with _GInt Tolerance=0 before proceeding with the split. This can result in a cleaner separation; however the geometries you are using seem to be quite simple, so I do not suspect that is the issue here