"David Borhani" <dav### [at] alummitedu> schreef in bericht 
news:web.4d44f37b6c17394ca1623e690@news.povray.org...
>I have a closed mesh2 surface (roughly spherical), clipped by a plane. 
>Viewed
> from a bit below the clipping plane, it looks sort of like an open 
> hemisphere.
>
> I would like to make a (CSG-like) solid band, or tube/pipe/cylinder, that 
> runs
> along the *edge* where the plane and the mesh2 intersect.
>

Maybe you should have a look at Poseray 3.13.7 beta. There is an 
experimental feature in there which does exactly that. Look under 
Groups>Lines, and experiment with "Add thickness to free mesh edges"

You can find Poseray at: http://mysite.verizon.net/sfg0000/

Thomas

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