And of course, try it with the wrong metal and you get very different results. | Hacker News

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dllthomas on Jan 14, 2015 | parent | context | favorite | on: A lucky little fish solves iron deficiency among w...

And of course, try it with the wrong metal and you get very different results.

mark-r on Jan 14, 2015 [–]

Along the same lines, just hope that nobody gets the bright idea to add color by coating them with lead-based paint.

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