Originally published at: http://www.howtogeek.com/186334/etch-metal-using-a-battery-and-simple-household-materials/
Have you ever wanted to add your name or a favorite logo to an item, but did not have an easy or economical way to do it? Then you will definitely love today’s DIY tutorial on etching using a battery and simple household materials!
Why is it necessary to have the metal to be etched, directly contact the battery terminal? Wouldn't a wire and alligator clip suffice?
They did use wire and alligator clips to make both contacts - watch it again and you'll see.
The idea in this is you're completing a circuit with your metal "catching" electrons coming through/from the acid you created with vinegar and salt (I think).
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