FULL rebuilding evolution/uprights

[Richard Brekne]

I keep hearing different suggestions and hints from highly respected corners
alluding to some connection between the sound / tone of the piano and the
pinblock. I gotta admit I am rather mystified as to how this can be the case,
but in one way or another this general theme keeps comming up.

So far I havent heard alot of solid discussion on either side of this general
question...mostly subjective and / or opinionated. Below tho are at least a
few claims towards how the pinblock can effect the tone of a piano.

It shore would be nice to get this whole matter cleared up. This magic circle
just wont go away..


>
> >>   We are getting....... for......, over sized pins,
> >
> >Among other things, Bolduc encourages new pinblock
> >for the sake of Tone! How... I said..really??. The
> >stiffest part of an upright is the pinblock, its
> >spine, to which we have spacers, posts, reflectors
> >glued together. If these glue joints are even just
> >weak, the soundboard leaks its energy more, relextive
> >characteristics around the rim go down. Even a good
> >looking board with a weak glue joint is suffering. If
> >the pinbock is moving forward in the least, perhaps we
> >are loosing crown. Having this apart allows us to
> >really restore the stiffness of the frame, and allow
> >the piano to be all its design meant it to be.....
> >Sold me.
> >
> >  He began doing upright pinblocks before soundboards.
> >He says he was surprised at the consistent change of
> >tone on projects from replacing upright blocks.
> >
> >Interesting....I'm rethinking what I do.
> >
> >

--
Richard Brekne
RPT, N.P.T.F.
Bergen, Norway
mailto:rbrekne@broadpark.no