Hi,

Design your shape (Network or Loft tool)
Apply Multiso script
Select edges and apply a vertical Extrude
Use Shell tool

See my screenshot.

Hi Finema.

@You : "...Design your shape (Network or Loft tool)
Apply Multiso script
Select edges and apply a vertical Extrude
Use Shell tool"

Fast and easy! All in less than 2 minutes.

Only with moi is possible!

Cheers.

Hi Rudl,
as Finema as shown you can use the multiso plugin to create the grid on your surface.
I added another surface to trim the extruded grid to give the depth shown in your photo.
Also I needed to create some new iso lines by projecting lines from the side.
Hope this helps.
Barry