Voronoi-like Pen Holder

This is a Voronoi-like pen holder. I say Voronoi-like, because I'm not convinced its an actual Voronoi diagram. I generated the mesh by creating a sort of twisted square-based cylinder in Blender and then used Meshmixer's dual graph pattern to generate the mesh. While the Voronoi diagram is the dual graph of a Delaunay triangulation, I suspect this is simply the dual of the original triangulation produced in Blender, which is almost certainly not Delaunay.