James the guy that does the demo's and sells it @ NAMES and car, motorcycle and other shows. I have used the stuff for 20 years it is about all the same alloy.
The biggest thing he has told me is clean clean clean it has to be clean!
Use only a dedicated stainless steel wire brush. NO ferrous ones or ones that are used for anything else.
The best tool if you don't have any stainless TIG rod to make the tool is a stainless steel fork with one tine to do the curd(oxide) moving out of the way. As soon as you lay a torch to it the oxide start forming. I still use it when I don't feel like clearing a path to the TIG welder.
Been there, probably broke it, doing that!
I am not a lawyer, and never played one on TV!
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