Thanks for the tips Walt. The folks at Praxair did a demonstration for me and gave me a Harris book on brazing. The Harris book on brazing has a lot of content. Tip sizes, what brazing alloy they would recommend for the given metal(s) along with pictures and captions of what a proper flame should like. I'm thinking about scanning the book (can't find it online) and making a .PDF for people that are just starting out, like me.
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