Structural Members

I'm adding structural members such as "C" Channels and AngleIron. Most of them are assembled in a rectangular shape. How do Iget them to join where there is no gap, without creating a new partfile for ever member and extruding/cutting certain parts?? I'm newwith this but the prints will be going straight to the welder andhe needs the measurement to do coping? Any help would begreat!SolidworksAssemblies