[pianotech] Steinway B

[John Ashcraft]

On Fri, Apr 8, 2011 at 10:11 AM, John Ashcraft <jaashcraft at gmail.com> wrote:

> Another course of action is available if the board doesn't sing in the
> treble: riblets. I worked on an upright from about 1870 that now has more
> sustain than any other upright I have seen. Someone had tried to deal with a
> soundboard crack by making rudimentary riblets; I removed them, repaired the
> crack, reshaped the riblets with a slight hollow so that they would pull the
> soundboard into a more crowned position and glued and screwed them back in.
> After the glue is well set, the screw can be replaced with a peg, or a
> pressure/go-bar can be used to place the riblets with glue only.
>
> --John Ashcraft, RPT
>
Thanks to all for not jumping on me! Those riblets went on the back of the
soundboard, so they were arched slightly, not hollowed.
--John Ashcraft
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