Spray or pour white vinegar on the metal. parts to be cleaned.
Wrap in paper towel and lay in a plastic tray with sides.
Spray or pour additional vinegar to saturate the paper towel.
Set aside for two hours.
Unwrap towels; using a stiff toothbrush or steel wool, scrub the metal. (NOTE: Steel wool is used to remove stubborn clumps of dirt or sap. Just be cautious when scrubbing tools with cutting edges, such as pruners. Only scrub one direction moving toward the sharp edge and not against it. You don鈥檛 want stitches! Plus blood = iron, iron = rust, rust = starting the cleaning all over again. 馃)
Rinse.
Sprinkle baking soda on the tools, add a bit of water and scrub again. (This not only aides in cleaning, but neutralizes the vinegar which is corrosive.)
Rinse and dry with paper towels.
Add a bit of mineral oil.
Sharpen tools by running your stone at a 20 degree angle, in one direction: the angle of the beveled edge. Four or five paths should do the trick. Turn the blade over and, following the same motion described previously, strike it once to remove any sharp burrs you created with sharpening.
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From @shanaielma