I downloaded a CAD model from a manufacturer. The model is contained under a parts file and all the parts are imported and are oriented to form one apparatus. Model make-up is more like an assembly because of all the parts but it is smaller parts combined together to make one big part. I need to be able to split this part into individual block sections, so I can later save those individual sections and reorient them in an assembly file. But when I perform the split function it breaks the part down to its 60+ individual parts. Is the way to merge or combine all those imported parts into a single part for its respective section? I inserted planes to give you an idea of what it is that I am trying to do.