I believe at the beginning of this thread someone mentioned using 5/8" bolts through the top. Which size do those few piano manufacturers who go the whole way through the top use? 5/8" would certainly do the job, but if I ever saw bolts that size in a piano I would probably regard it as overkill. I've been using 5/16" with good success, and if a little attention is paid to cosmetics, it would be possible for even a (not too observant) piano technician not to notice the repair. Regards, Clyde
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