I'm thinking one might be useful - but have only ever done
oxy/acetylene welding.
Is it something you can learn by doing, or should one take a class?

I was in much the same place a while ago.  I just dove in on my
first project, recognizing that it might take awhile to learn it.
So far, so good.  I bought a book or two to read up on it.

-- Jim

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