[big gear head]

I've been a TIG welder for more than 30 years. I was DOD aircraft certified for about 10 years and I've welded most materials that can be welded. I was wondering how the Cragar wheels were welded together, and now I know. Steel and aluminum still can not be welded together. There is a guy who has been working on a process to do this, I think in Australia, but as far as I know it's still not perfected, and it's very expensive. He's trying to develop it for the auto manufacturers where it would be very useful. As far as I can tell the Alumi Steel rod is just a brazing rod that allows steel to be TIG brazed to aluminum. Welding is where the parent metal is melted along with the filler and both flow together. From what I can see with the Alumi Steel rod only the rod is being melted and it flows onto the surface of the parent metal, which is brazing.