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Repairing the Accordion
Bellows in a Duo-Art

While this video is pretty much self-explanatory, I should add a few comments. One, the accordion pneumatics in the piano for which this video was created are covered with tan pneumatic leather that was not sealed when the piano was restored. Twenty-five years ago, it wasn't considered 'common practice' to seal the leather. In fact, in 1975 a more common practice was to use thin pneumatic cloth instead of tan pneumatic leather, and the subject of the "best" material for the accordions continues to be debated. However, as can be seen in this video, thin pneumatic cloth might not have been the wisest choice -although it had its advantages. Secondly, Dow Corning 3140 didn't exist when the player piano, for which this video was created, was restored. Had a sealer been used on the leather, the most logical choices would have been egg white or diluted Carter's Rubber Cement.

Regardless of what 'was' done or what 'might' have been done in the past, the truth is that the leather on the accordion pneumatics is still quite supple. So, the aim of the procedure is simply to seal the leather -nothing more, nothing less. Were I to consider what I would do today, my choice would be clear. I would seal the leather with Dow Corning 3140 after completing the recovering process.

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This page was last revised January 26, 2019 by John A. Tuttle, who Assumes No Liability
For The Accuracy or Validity of the Statements and/or Opinions
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