Layered textures, to answer simply.  Take a look at the Doc covering
them, use that to overlay a partially rusty or oil film texture over
another. The first texture is base and all others usually contain
filtered or transmitted color with at least some clear parts and some
opaque parts for example.

Bob

Derek Zahn <der### [at] uswestnet> wrote in message
news:37d470d7@news.povray.org...
> Hello all!
>
> I decided the other day to actually try making an image (for IRTC)
with
> povray and have been having a great deal of fun trying to figure out
how to
> make all this stuff work.  There's one thing in particular that is
bothering
> me and any pointers would be appreciated.  Suppose I have some kind
of
> complicated shape like a lamp or an apple and I want to put a stain
or some
> rust or oil or something on it.  How is that done?
>
> Thanks in advance!
>
> derek
>
>
>

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