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.

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An assortment of large rusty bolts and nuts on a wooden table - Limpido /Getty Images You don't have to toss out bolts just because they've developed a layer of rust. In many cases, that old, corroded ...