Hi @oscarcorripio,
exactly - currently, you can not merge or combine different meshes in SimScale. I see that your current issue is that you can not combine “local element size” / “entity refinement” with “Inflate layers”. That’s in fact a current limitation of the tetrahedral mesh generation right now. In fact this is something that is part of the current improvement of the meshing user experience and capabilities (as discussed over here: Your opinion needed: Mesh operation type naming - #6 by dheiny ). So I’d recommend watching that thread over there, as there will be more discussions on potential improvements soon.
Best,
David