• Rust removal

    From Gaines Milligan@21:1/5 to All on Thu Sep 16 06:58:14 2021
    When an accordion goes out of tune, rust is often the issue.
    When you look at the reeds, you might not see the rust because it is
    often under the reed on the blued area, but the sound of a rusty
    accordion is characteristic; a lot of the reeds dropped in pitch.
    Chemicals like naval jelly or acid will totally ruin the reeds; rust has
    to be removed manually without scratching the reed plate.
    The reeds have to be taken out of the frames, and the valve flaps
    removed. If wax is what was holding the reeds on the blocks, new wax has
    to be poured using the correct amount of heat, not a "medicine dropper",
    or pieces of wax applied with a soldering iron, but wax spoons and an
    alcohol burner.
    Then the reed valves are usually replaced with new ones, although it is possible to re-use leather valves if they are clean, by re-shaping them
    when they have gotten bent. The "leathers" should not be put on with
    contact cement, but only shellac glue. "Elmers" or other water-based
    glue won't hold on leather or plastic.
    Plastic (vinyl) reed valves, on the other hand should only be attached
    with adhesive, such as (possibly) contact cement, of E6000 or similar.
    Once I ordered some valve glue from an accordion parts supplier, and it
    turned out to be "Liquid Nails" which will totally mess up your reed
    plates. i had to try to restore an accordion where someone had attached
    the leathers with that, and got it on the reeds near the rivet which
    made the pitch go way sharp and it was a chore to get it off.
    There is a lot more to be said about reed restoration technique, and no
    one should probably try this without a more thorough understanding than
    what I have explained here in this short post.

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