"Bill Pragnell" <bil### [at] hotmailcom> schreef in bericht 
news:web.484fad347b589d73731f01d10@news.povray.org...
>
> It is not surprising that you're having trouble; there are too many gaps 
> in the
> base object. Look at the cross-section in the image below!

Of course! You warned exactly against this, and I never thought to check the 
internal aspect of the object! Thank you, Bill, I totally overlooked this 
:-)
A clear case not only of RTFM, but also of : Apply TFM!

>
> You need to close these gaps, especially the thin gap across the centre 
> and the
> concave underside. Unless the square peg-hole has some special purpose I'd 
> plug
> this too. And don't forget to make sure it's a merge, not a union, or the
> internal surfaces get hit first!
>
> A default flattened sphere as inner object should work OK once you've 
> filled the
> gaps.
>

Yes, I am going to do that...

Thomas

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