> zig <zig### [at] lapostenet> wrote:
>> the error !
> 
>   Without even rendering the scene my first guess is that it's the
> so-called coincident surfaces problem. Have you checked it's not that?
> 
> http://tag.povray.org/povQandT/languageQandT.html#blackspots
> 

Thank you very much, it's exactly my probleme

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