Soundboard recrowning and rib re-arching.

[Farrell]

Thump wrote:
SNIP
>>> > ribs might be scraped clean of finish. Then, ina
>> > "flexed out" state, painted with super-thin CA
>> glue,
>> > whicj should impregnate the wood, making ita  lot
>> > stiffer.
>> 
>> Did the ribs loose some stiffness somewhere? How
>> much did/do they need?
> 
> Well, I'm guessing that he cwassuggesting that for the
> board to go flat, the ribs must suffer some
> longitudinal compression, as well.

Longitudinal compression? Where? How? What is that?

What if they were flat when new - as many are?

> If they were
> "stretched" into a bow again, then impregnated with
> some C.A. I would think that thios oud aid the crown,
> greatly. I have an old Knabe upright I think I'll try
> this on. I'll get it toa  stable, low RH< measure the
> crown, bow out ribs and impregnate, and measure again,
> all de-strung, and get back to y'all. But it may bea
> while, so if anine wishes to "beat me to it", i invite
> them to try.

No thanks. I ran out of condoms and I'm kinda shy anyway.

Terry Farrell