> > > What size piano? 1909 6'1" SSA What's the back scale length of A-0? 95mm > Cantilevered bridge? No - converted. Bass rescaled? Only slightly - reduced spl to get slightly longer tail lengths. What's the core diameter of A-0? .058 What "design" board did you build? Radius cut ribs - 60 ft in the bass and tapering to the treble - 16 total. Made from quartered Sitka. Glue up at around 6 to 6.5 mc. The board was not cut off in the bass but the inner rim gluing surface was built up with epoxy and veneer to accomidate the part of the board that did not want to go down on the rim without a struggle. Thickness is 9mm - on the fat side - no diaphraming. >Gene >
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