If I were looking for welders for thin gauge SS, and I couldn't find any that looked like they were good enough, I would look for bicycle frame welders. If you can find a guy who can weld a SS bike frame, he could definitely weld a kettle. SS bike tubes are a lot thinner than most kettles.
I would be prepared to pay a lot of money for that. Good welders aren't exactly cheap.
To paraphrase Dr. England - "Off-flavors smooth with time. So do mountains. Brew it right from the start!"
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