Well while watching Spike's
Extreme 4x4 show this afternoon, they showed a software program that helps make compound joints for tubing. For example if you had to have a horizontal and vertical pipe connect with two pipes at 45* angles this program will allow you to print out a template (wrapper) to mark where to cut away for smooth joints. For anyone who wants to check it out,
Bend Tech's site &
Bend-Tech Pro demo link. Now it's just another software program to search and find (hopefully for free).