Don, I do hope that someone (Ron N or O, or Del) clarifies their position on RC v. RC & S. My understanding was that RC & S did not require the soundboard panel (and ribs) being dried prior to glue-up to the extent that the classical RC method calls for. Patrick Draine On Sat, 09 Dec 2006 07:41:20, Don <pianotuna at accesscomm.ca> wrote: > Hi Gregor, > RC = rib crowned (curved ribs pressed against the sound board) > RC & S = rib crowned and supported (really the same as RC)
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