Soundboard repair question

[Annie Grieshop]

This question was posed to me yesterday by the facility manager of a local
community center:  could a cracked soundboard be repaired by dripping CA
into the crack (as is done with bridges)?

My questions were:  would CA hold up and would it help?

I didn't know the answers to any of those, although I could hypothesize
some.  BTW, I told him NOT to try it, since both the pianos with cracked
soundboards are Steinways:  a 1950s B and a 1931 L that's been rebuilt and
refinished.  And nobody ever mentioned (or remembered) to think about
humidity control.  Harrumph!  The cracks aren't horrid, but they are there.

Thanks for any comments.

Annie G.