Mike Williams <nos### [at] econymdemoncouk> wrote:
> Wasn't it i_sage who wrote:
> >No doubt I am doing something silly, but it's not obvious to me...
> >
> >I am trying to make a complex "glass" object using CSG. But if I make a
> >union of two objects made of identical transparent material, I still get
> >reflections from the interface - which is not "physics". Worse (for me!) I
> >get different results according to whether I put the
> >finish/interior/pigment descriptions on each component of the union
> >separately, or on the union as a whole.
> >
> >Can someone please help me? Or just point me to the right bit of the manual?
>
> Use "merge" instead of "union".
>
> --
> Mike Williams
> Gentleman of Leisure

Thanks, Mike. Easy when you know...

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