How to Seal a Harmonica Comb
A harmonica comb rests on the inside of a harmonica and looks, as you might expect, like a large comb. Certain older harmonicas use a wooden comb instead of plastic. Since moisture is produced by your mouth as you play, the comb needs to be sealed to keep from becoming damp, warped and unplayable. Comb sealing doesn't need to be done that often, but it should be done properly to ensure a good barrier.
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Instructions
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Flat sand your harmonica comb using a flat sander box, gently rubbing the harmonica comb back and forth on each side until the comb has a smooth, level surface.
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2
Pry your can of sealing oil open with a screwdriver and place it on an old towel.
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3
Dip the harmonica comb into the oil, getting as much of the comb in the can as possible, and keep it submerged for 3 to 4 seconds.
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Remove the comb from the oil, letting it drip for about 15 seconds. Switch your grip to the opposite end of the comb, and dip the comb back into the oil for 3 to 4 seconds. Repeat this process four or five times until the comb has a good coating on it.
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Lay the comb flat on the towel, and wrap the towel on top of the comb. Gently press on the comb inside the towel to soak up any extra oil.
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Dip a small piece of paper towel in the oil, and place a small drop on the tip of each tooth of the comb, allowing it to dry before applying another drop. Continue placing drops on the tips of the teeth until the tips are slightly raised and bubbled.
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Flat sand your comb after it dries to ensure the surface remains smooth and level. Sand the bubbled oil on the tips of the teeth to ensure they are an even height.
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Tips & Warnings
Avoid using petroleum-based solvents to seal your harmonica as the smell and taste may never dissipate.
