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    Guide pins

    The guide pins receive the downward movement of the piano keys. Guide pins are often oxidised or rusty, especially at the bottom. The diameter of a piano’s guide pin is in proportion to the thickness of the mortise.

    Guide pins

    The guide pins receive the downward movement of the piano keys. Guide pins are often oxidised or rusty, especially at the bottom. The diameter of a piano’s guide pin is in proportion to the thickness of the mortise.