Hi Michael. I am not sure that I understand all that you explained to me. English isn't my mother language and I am not really familiar with how exactly works most of MoI mathematic functions and how MoI calculates surfaces joining etc...So where should I try to find "weld" and "merge" options? Inside of Poser or some other 3D modeling app? And what about software named TOPOGUN ? Can I use him in these purposes ?