I want to see tetrahedron volumes generated from STL meshes in ParaView (5.5.2).
From a given STL (simple cube, for example), I can generate a volume mesh using gmsh, and export it as .vtk UnstructuredGrid.
When I open it with notepad, I can inspect that its properly generated, with all the surface and volume elements and their types (5,10).
However, when opening this file in ParaView, I can see the surface, but when I do
Representation->Volume, there is just nothing there, it does not seem to load the volumetric data, only the surface data.
The information seems to suggest that the number of loaded cells is correct (matches surface+volume cells in vtk).
How can I see the volumetric tetrahedrons inside my mesh? Ideally I'd like to clip my mesh to be able to see inside.