Something else you may want to consider is bracing the structural mass to diminish torsional movement of the case putting it out of tune. The fact that the piano rests on four wheels and a variation in floor level can put a strain on the case and affect the tuning. Someone at a university had a piano which was in constant relocation and suffered tuning instability. Bracing the back posts made the tuning less unstable. Perhaps a piece of 1" Luan (a finish-grade, sanded plywood) can be attached to the back to offer this more rigid support for moving and placement on different flooring surfaces. The sections between the back post could be cut out for sound with all edges 1/4 bead rounded/routed, then stained and a protective finish applied for looks. Leave ;room at the top for the lid to be able to open. Regards, Jon Page, piano technician Harwich Port, Cape Cod, Mass. mailto:jonpage@attbi.com ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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