rib glueing

[Garold Beyer]

>>If one is using
> > straight ribs and compression crowning (I am), does pressing into a
curved
> > surface have any material effect on the crown or is Jack Krefting
correct
> > when he stated in one of his series of articles that it does not.
>
> Huh?  Of course it will have an effect on the resulting crown.
> Del

>There isn't any real
>difference between a crown being achieved by >pressing panel and straight
>rib into a curved caul, and one resulting from >rehydration of a severely
>dried panel glued to a flat rib on a flat caul.
>Ron N

>If you induce a curve to two thin pieces of
>wood and glue them together in the curved state, >THEY STAY CURVED. Unless
>piano soundboards follow some other natural >principals, my guess is that
is
>DOES matter.
>Terry Farrel

PTJ, 7/87, page15 "Incidentally, it does no good at all to have a bellied
press and then use flat ribs; if you aren't going to crown the ribs, you
might as well use a flat deck and cook the board a bit more."
Jack Krefting

So.........Which is it, and why?
Garold Beyer