I could see the first pic no problem.

I confess I have no idea how your box approach is working. The way I'd suggest
doing a regular octahedron is with plane intersections like this:

intersection {
    plane { < 1, 1, 1>, 1 }
    plane { < 1, 1,-1>, 1 }
    plane { < 1,-1, 1>, 1 }
    plane { < 1,-1,-1>, 1 }
    plane { <-1, 1, 1>, 1 }
    plane { <-1, 1,-1>, 1 }
    plane { <-1,-1, 1>, 1 }
    plane { <-1,-1,-1>, 1 }
}

8 planes to describe an 8 sided solid :)

Hope this helps.

--
Tek
http://www.evilsuperbrain.com


Flaming Monarch <fla### [at] gatescom> wrote in message
news:3C9### [at] gatescom...
> did the pic work It didnt on my end when I tried to use it so here it is
> again
> srry all
>
> Flaming Monarch wrote:
>
> > Hi all I need some help making some shapes,
> > I'm trying to kane an octahedron without taking a box and cutting off
> > edges, as I later want to make a regular dodecahedron and an icosahedron.
> > I finally found the prisim and it makes good stuff for other things but
> > i'm still new and cant find how to make the shapes above thanks for the
> > help!
> >
> > this is what I have to do ?  but remember i'm new!
> >
> > #declare cutter =
> > box {
> > <2.1,2.1,2.1>
> > <-2.1,-2.1,-2.1>
> > pigment {Green}
> > translate  <0,3.5,0>
> > }
> >
> > difference {
> >
> > box {
> > <2,2,2>
> > <-2,-2,-2>
> > pigment {Green}
> > }
> > object {cutter  rotate x*45}
> > object {cutter  rotate x*-45}
> > object {cutter  rotate x*45 scale -1}
> > object {cutter  rotate x*-45 scale -1}
> >
> >
> > object {cutter  rotate z*45}
> > object {cutter  rotate z*-45}
> > object {cutter  rotate z*45 scale -1}
> > object {cutter  rotate z*-45 scale -1}
> > }
>
>


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