I was doing a trim project and ended up with multiple non solids (the pillars). I was wondering ifthere was an easy way to create solids out of them without doing them one at a time.

I dont want to boolean the whole thing so I keep seperate objects.

I was thinking of seperating the large solid, then duplicating it's surface to use as a boolean diff with the pillars.

Would this be an appropriate solution?

Also, here is a 3dm file. After I do a copy and paste to bring the objects into a new doc, the display goes haywire. Is there a setting thats causing this or????

Thanks,
Burr