Interesting and now all you need is the different output from the pipe or tube iso's to agree
with on your software end.
Back over 40 years ago major pipe fab shops would automaticaly select appropriate material from storage, have the material conveyed to the machine, index, bend, add additional items like back up flanges, lap the ends of the pipe
or tube, etc. You had to see the "key punched cut cards" to appriciate. Additionaly orbital welding machines woud weld in sections. To make all work, the sketches had to take into consideration the fabrication.
Still neat posting and just thought i would throw out some history.
RICH