Is there any way to get two "ACIS solid" objects to move as a single unit without adding them together? I'm trying to model a plastic holder and metal blade, and I'd like to be able to 'assemble' them as a single unit, but still have the ability to change the material for the blade and the holder separately. I was thinking constraints would possibly work, but (I think) that only works on 2D objects.
If I add them, I can assemble them. Then, I can delete the '3D Add' from the 'Selection Info' palette, change the materials separately, and re-add them, but is that the best way to do this?