Cheers Michael,

I didnt mean it was simple for this to get done or calculate.....it's just our other modeler goes a lot lot further than this.

>>But I do think that it will be possible to get non-interfering and non-consuming situations to work better though.

Well, that would be great if you can tune it up some more - thanks!!

Would you happen to know what Cad product deals with shelling Surfs/Solids the best ?