I have just been looking in a practical engineering book (about 1960) and to
my surprise the author of the chapter on brazing refers to brazing alloys as
spelter. He is clearly not referring to zinc. He gives compositions of
alloys for brazing various metals containing from 25-66% copper, balance
zinc. None of my dictionaries (one quite old) accept this definition. You
live and learn!
A clear source of confusion.
Peter Hutchison
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