I think I can partly guess how. Since you mentioned the smoothing and since I remember DrGeep's tutorial where he showed the Poser Stairs with the vertices welded. ... Hmm... off to Max to test my idea ;o) Oh and don't worry, _dodger, I can't model a tenth as good as you anyway so even IF I should figure out how you did it (not really likely after all) you can be sure I' won't exploit it :o)

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You just can't put the words "Poserites" and "happy" in the same sentence - didn't you know that? LaurieA
  Using Poser since 2002. Currently at Version 11.1 - Win 10.