Hi Speedy, maybe you could attach a .3dm file that shows your boolean problem?

I think that maybe you are asking about being able to boolean surfaces together to form a volume out of them where they all intersect? There is an automatic way to do this by using the merge boolean operation. Right now Merge is hidden as a special mode of Boolean Intersection. To use it, select all your objects and then run Boolean Intersection and instead of picking any objects for the second set, just push "Done" there. This will merge the surfaces together and extract any common volume and discard excess pieces.

For the next beta I have separated out Merge into its own command instead of having it as a special mode of Intersection.

- Michael