3D Voronoi Scaffold with Variable Beam thickness - Issues with Mesh

Gradient Beam Thickness - 3D Voronoi.gh (31.5 KB)

Hi there,
I am trying to create a scaffold from voronoi cells using the distance between scaled cell faces to create the beam thickness. I have attempted to control the scaling of the faces to to alter the thickness of the beams. When I try to mesh the surface. I get ‘holes’ between each square beam.

I would like to be able to increase the beam thickness until it is essentially no longer porous. Could anyone give me some advice if I am going about this the wrong way and how to get a better closed mesh of my object that does not leave the holes shown in the picture. I have attached the file in question.
Thanks in advance,