Great old pianos with fat ribs

[gordon stelter]

Terry,
     It's simply that the "Face" has a tighter radius
than the "Spine". Is that not adequate evidence ?
     Thump



--- Terry <terry@farrellpiano.com> wrote:

> You still don't know for sure because you don't know
> how the rib was originally shaped. I assume you mean
> the "face" to be the surface glued to the panel and
> the spine is the opposite surface. What if the
> "face" was straight and the "spine" was contoured
> (feathered) originally. Dry down a panel and glue on
> the ribs. Let the board develop its compression
> crowning and now you have a curved straight "spine"
> and a curved "face".
> 
> Terry Farrell
> 
> 
>   Terry asked: " How can you =
>   determine that? If the rib is curved, could it
> still not be from panel =
>   compression? You may well be correct, but I just
> don't see how one could =
>   be so sure.
> 
>   Terry,
>   It's simple. Use a straight edge. If the rib
> "face" is curved and the "spine" is straight, then
> the rib has a machined "crown". With an olde piano,
> the "spine" may be curved the other way. Still a
> machined-in crown.<G> 
>   Joe Garrett, R.P.T.
>   Captain, Tool Police
>   Squares R I



		
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