DIY: Metal Etching

How to electro etch some steel. With enough time, this will comply with the ATF's .003" engraving depth.

What you'll need..

Power supply: 9v battery, 12v battery, etc..
Stencil
Cloth
1/4 Cup warm Dihydrogen monoxide (tap water)
1 tablespoon Sodium chloride (salt)
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