Over time, as iron, steel, and other ferrous metals are exposed to oxygen and moisture they can undergo oxidation, a chemical reaction that eats away at the metal and rust your tools. Left long enough ...

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You don't have to toss out bolts just because they've developed a layer of rust. In many cases, that old, corroded hardware can be brought back to life with a little patience and the right approach.

Electrolysis is one of the safest and most effective ways to clean rust from historic relics. In this guide, we show how Civil War artifacts, tools, and more can be restored step by step.