"Use the Join command - once all edges of a model are joined to other edges forming a watertight closed skin, that makes the object enclose a volume and that is what makes a solid.
"


I`m not so familiar with surfaces, I have done lot`s of works with solid parts and assemblies so there are still a new area to learn :).
Can I join all in one time or do I have to go thru all one by one?

Thanks,

-d3-