One thing here that needs to be put to rest is that a brazed joint does NOT provide strength equivalent to a welded joint no matter whether it is furnace brazed or done by hand. It just ain't so ! It may provide "sufficient" strength depending on application but the" total" or "maximum" strength is not equal. Most of the examples that are cited are some type of tube (round or square) that has thin walls and used in racing applications where they only have to hold up for a short time. Brazing does not melt the parent metal and become as one with it, it is a surface application . Skip to the 7 minute mark............ . There is nothing wrong with using brazing in the correct situation. Building a frame for a car to be driven on public roads for thousands of miles is not that situation. There is a reason why its not the first choice in assembling aircraft that use tubing/fabric construction. Probably less than 1 in a thousand homebuilt tube airplanes ever used brazing as the main construction process. Given that brazing is so easy to do, you have to ask yourself why all those amatuer builders then struggle to learn how to weld instead. They have the same problems learning to weld that hot rodders do. At first it was O/A welding. Then Tig worked its way into the picture. Now there are even some planes constructed with Mig. They have to deal with not only trying to get penetration on thin metal tubing, but welding around curved surfaces......and trying not to burn thru the thin tubing. Still with all those concerns, they seldom ever revert to brazing. I can guarantee that many of those builders produce O/A welds that look like total crap.....yet they are still strong enough to hold together. Move over to an automotive frame and you have much thicker material with lots more mass. Penetration is easy with a Mig and even if your weld isn't beautiful, it will still be stronger than brazing.