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Thread: Top sinkage on 1918 Gibson A4

  1. #1

    Default Top sinkage on 1918 Gibson A4

    I bought an A4 a year ago. The top is slightly sunk on either end of the bridge. I play it for a few weeks ata time, then loosen the strings and put it away for a few weeks.

    What can be done to prevent any more sinkage? Stored at proper temperature and humidity.

    What causes the tops to sink?

    Thank you.

  2. #2
    Registered User sunburst's Avatar
    Join Date
    Nov 2003
    Location
    Kentucky
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    15,863

    Default Re: Top sinkage on 1918 Gibson A4

    Tops usually sink because they are too thin. Many old Gibsons have/had this problem. Sometimes extra braces can be added, sometimes they need to be re-topped. I'm carving a new top for one "as we speak". It had been re-braced at least twice, but the top was simply too thin to withstand the pressure on the bridge.

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