Actual welding is very, very strong. I think the “as seen on TV” aluminum “welding” products are actually doing something called brazing. Brazing is not as str

Actual welding is very, very strong. I think the “as seen on TV” aluminum “welding” products are actually doing something called brazing. Brazing is not as strong as it doesn’t melt 2 pieces of metal together. Instead, it more or less “glues” them together with a different, lower melting point metal/alloy. It is easily possible to make bad welds so if you don’t know what you are doing, bolted construction would probably safer. Example: suppose you wanted to add a roll bar to you car for track days. If you welded it in and didn’t know what you were doing, you could change the characteristics of the car metal close to the weld such that it would become brittle. In an accident, the roll bar would just punch through the sheet metal.