Thanks for the reply. I was working on this after I posted – What I’m doing is creating an Exploded View in Autodesk Inventor. I export that to a DWG file I can open in Illustrator. So now I have a vector file with, for example, an exploded view of a car engine… every part separated from the other. I want to give these depth using different line weights, but what I have is one file with every path stroked at the same weight.
Here’s what I did. I created a 2nd layer copy of the first, locked the original, then I did an Object>Expand>Path and then I Alt-Clicked Unite in Pathfinder. Then I clicked the Expand button in Pathfinder. This gave me black objects with no stroke. But it also gave me individual borders around each item. Now all I have to do is select the outer paths and move them to a 3rd layer, then delete the 2nd layer and I have my outlines. Of course then I would do some manual line weighting… not sure how many technical illustrators are here. But this is how I figured out how to do this. I wonder though…
Is there a better way? It certainly goes faster than I thought this way, but I’m always ready for faster shortcuts!