Nile

Thank you so much, Kevin - great instructions and that image sequence is really helpful too. The steel tubes in the finished product will be welded & ground smooth at the connection points, so using your method I'll be able to produce a model that I can use to illustrate both the overall shape and corner details.

I'm trying to figure out the best way to model a light tubular steel frame for a 6-facet 3D shape. I modeled the basic solid shape and figured I'd extrude my frame from a 3D path that I created along the edges, but VW does not seem to allow extrudes along any 3D path which has intersecting lines from separate planes. I then tried creating a separate path for each object plane, but as you can see in the attached close up pic, there are issues where the separate extrusions intersect. Am I approaching this wrong? any ideas would be greatly appreciated - I have to do this same process for a number of different shapes!