tooling up for soundboard replacement

[Carl Meyer]

Jim, I was referring to drilling the holes in the rim for the bolts.  I
imagine for a new piano they would just put the plate in and insert bolts in
every other hole to set the plate height.  Then using the other plate holes
as a drilling guide, install these bolts, remove the first set and then
drill for those.

The pure Baldwin system is not practical for rebuilds.  Too much trouble to
thread the plates.  Perpendicularity would be hard to achieve etc etc.  The
Coleman, Nossaman, Meyer systems work fine.

I had one tech insist that you absotively posolutely had to have the
"acoustic dowels" in place so he still removes the plate 97 times to get
everything right.  Oh, well.

Carl Meyer Ptg assoc
Santa Clara, Ca.




----- Original Message ----- 
From: <JIMRPT@aol.com>
To: <pianotech@ptg.org>
Sent: Sunday, December 07, 2003 2:24 PM
Subject: Re: tooling up for soundboard replacement


> In a message dated 12/7/03 2:49:37 PM Eastern Standard Time,
> cmpiano@comcast.net writes:
>
> <<  Having the plate threaded leaves very little error tolerance in
drilling
> the holes.  Okay for production, but awkward for rebuilds.
>   >>
> Auu contre' mon petite. with the accujust hitch pins, which go hand and
glove
> with the 'threaded suspension system', the tolerance is quite wide.....
> Jim Bryant (FL)
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