> Also, how could I create an object (specifically gears) using involute
> curves. I can see creating a curved surface, but what about a solid?
> Is there a way of using polar coordinates in POV-Ray?

I think the new version of the isosurface patch in the superpatch will
have support for this. Just wait for Ron Parker to announce the new
version of the superpatch, which should include that, AFAIK.

--
Anthony L. Bennett
http://welcome.to/TonyB

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