voronoi on box

Hi everyone,

I am trying to get an effect as per attached picture "Final Effect".

I've read different discussion such as:

http://www.grasshopper3d.com/forum/topics/hey-how-to-creat-a-3d-vor...

and

http://www.grasshopper3d.com/forum/topics/skeletal-mesh?id=2985220%...

and other similar, but couldn't get any thing as I wanted.

The idea is to apply that type of pattern on a 800x800x150mm block of modelling board, then CNC the piece with the robot here in the lab, any ideas how to do it? 

I attach a couple of definitions which might help.

Thank you