Everyone has at least one old, rusted hunting knife in a drawer or on a shelf.  Here's an easy way to clean it as good as new.

All you need is an Irish Potato, a red building brick and a hammer.  Cut the potato into quarters.  Then, using the hammer knock off some chips from the brick, then pound the chips into dust.  Place the flesh side of the potato into the brick dust and scrub your blade.  Change sides of the potato and dip into the brick dust as needed.

Believe me it works.

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