I think the point being raised boiled basically down to the degree of
compression an RC & S board experiences when string bearing leaves
whatever residual crown ends up being the case. I'm not sure thats been
quantified by anyone yet... so it might be a nice thing for someone to
throw into the mix. Leaving 25 % or original crown strikes me as
introducing fairly significant amounts of compression into the panel.
Cheers
RicB
While there are different approaches by those doing rib crowned
boards, it's
not unusual to design them so that there is only about 25% of the
original
crown remaining after they are loaded.
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