In article <web.3e43e6949320e9d02ce39a3a0@news.povray.org>,
 "Per Rutquist" <per### [at] volvocom> wrote:

> The only solution that I can think of would be to modify POV-ray itself.
> The feature we need is a half-merge. That is a method which takes the
> union of two objects, and keeps exactly one of the internal surfaces.

Read the rest of this thread, what POV-Ray does has been explained. You 
should simply overlap the surfaces slightly, this will give the correct 
result.

-- 
Christopher James Huff <cja### [at] earthlinknet>
http://home.earthlink.net/~cjameshuff/
POV-Ray TAG: chr### [at] tagpovrayorg
http://tag.povray.org/

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