Tuning

Re-gluing detached hammers

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GIUSEPPEPIANO

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Opening post by GIUSEPPEPIANO

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COSENZA

Hello to all the friends of the forum

Not infrequently, I happen to find very worked-on or dated pianos that in the past had some hammers come unglued, then poorly reglued. By poorly, I mean the fact that they appear higher than their neighbors; clearly unglued, glue applied and reglued, without considering the fact that the fresh glue itself creates thickness.

Besides the aesthetic factor, an inevitably shifted striking point results higher up. Personally, when I find a hammer head about to come unglued, before reglueing (personally I use white glue), I lightly drill the hammer hole where the stiletto will go with a bit, in order to compensate for the thickness created by the fresh glue.

Is this good practice?

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Reply 2 by pianoexpert

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rocca di papa

Certainly. You must use a specific bit and also clean the glue from the stylus. The stylus must be about two mm shorter than the dry calculated measurement.

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