I'm sure this has been mentioned, but for gluing many ivories, you can use hot glue (as was done originally) mixed with a litttle titanium dioxide. This makes the glue opaque white, thus making the translucent ivory look nice. They probably used lead oxide (white lead) in the old days. The keys can be clamped to avoid warping. Philip Jamison West Chester, PA
This PTG archive page provided courtesy of Moy Piano Service, LLC