Hi,
how can I intersect two tetrahedra with vtk?
(if it is possible …)
Is this what you are looking for?
https://lorensen.github.io/VTKExamples/site/Cxx/PolyData/BooleanOperationPolyDataFilter/
The boolean operations filter works only with 2D elements, not volumetric elements.
Ok, now I know why my experiments failed! 
There is an another way to do that?
Thanks
(PS. I work in Python)