I am not completely sure what you mean.

If you want to eliminate internal edges of objects you can use a merge instead 
of a union statement to group them.

merge {
   object ...
   object ...
}

If this is of no help, please let us know - and perhaps provide an example.
Bill P.


> Hi!
> 
> Is it possible to combine two shapes smoothly?
> 
> Thank you!!!
>

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