Hi Guy. Yes, I have tried stiffening Steinway D keys. Not with saturating the sides with glue but by epoxying fiberglas cloth and carbon fiber cloth on their sides. (Separate experiments.) The whole thing was exceedingly messy and not particularly effective. My final solution (see the PTJ articles on action saturation) was to eliminate the half-round balance button and install a maple foot along the bottom of the keys of equal height. The original buttons stayed in place. Again, see the articles. Del Delwin D Fandrich Piano Design & Fabrication 512 Hanna Avenue Aberdeen, Washington 98520 USA Phone 360.532-2563 Fax 360.537-1262 <mailto:fandrich@pianobuilders.com> <http://www.pianobuilders.com>
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