Polysphere "Thickness"

[ares2101]

Hi, been ages since I came here, trying to refamiliarize myself with some of the finer details of Terragen.  I'm really liking polyspheres, but have one question about them in particular.  I made a dome structure out of a polysphere as an experiment by making parts of it transparent, leaving just the struts, but it looks razor thin as is.  Is there a way to thicken it somehow?  Give it some more substance?  The structure in question is based entirely on a polysphere with a default shader.  Displacements just roughen the surface, but it's still two-dimensionally thin.

[Dune]

I'd use two polyspheres, one slightly bigger. Everything is infinitely thin in Terragen I'm afraid.

[WAS]

May also be able to fake it by masking just the edges and displacing down or up to fold them

[Dune]

Ah, struts, now I know what that means. Then a double sphere won't work, but indeed some sort of displacement of just the edges.
But I think it's easier to make a sphere elsewhere and import.