In article <3c421706@news.povray.org>, "25ct" <25c### [at] lineonenet> wrote:

>     Just to put a hole in a door so that I can add the spy-hole, eg, a lens
> and surrounding fittings.
>     Is there another way Chris? What would difference do?

The "difference" operation "cuts out" one object from another, leaving a 
closed surface behind as though it were cutting a solid block of 
material (though the cut surface has the texture of the cutting object). 
The "clipped_by" feature is an object attribute that removes parts of 
the surface outside a clipping shape, leaving gaps in the surface.

-- 
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Christopher James Huff <chr### [at] maccom>

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