Hygrometer

[Erwinspiano@AOL.COM]

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In a message dated 9/1/2002 2:12:44 AM Pacific Daylight Time, 
Richard.Brekne@grieg.uib.no writes:


> Subj:Re: Hygrometer 
> Date:9/1/2002 2:12:44 AM Pacific Daylight Time
> From:<A HREF="mailto:Richard.Brekne@grieg.uib.no">Richard.Brekne@grieg.uib.no</A>
> Reply-to:<A HREF="mailto:pianotech@ptg.org">pianotech@ptg.org</A>
> To:<A HREF="mailto:pianotech@ptg.org">pianotech@ptg.org</A>
> Sent from the Internet 
> 
>      Hi Rick

        Sorry Maybe I should have clarified . If the belly guy grabs 6 
soundboards out of the hot box on a muggy summer morning pulls it out into 
the uncontrolled belly room and doesn't get around to ribbing the last couple 
till lunch time I'm guessin that there is going to be a tremendous difference 
in the amount of crowning from the first board to the last. I've observed 
this phenomena in a variety of Stwys, Mason ans Hamlin and others Some have 
lots of ridging or cracks.These actually sound better than others that come 
to my shop with "a perfect board" meaning no cracks but also no crown and no 
eveidence that it ever had any but, cosmetically perfect. These sound wooden 
with short sustain in the "money notes". They also need replacing.
   My point was that the belly room should be climate controlled and I have 
no idea if it has been changed. When a board is pressed up with to high a an 
emc in the compression crowned method the board can reverse crown later as 
witnessed by Terry F. in one of his recent posts.
  My building isn't climate controlled either I just rib quickly as soon as 
the board comes outta da box but. In Calif. we rarely have a hot muggy day 
like the east and midwest. I have many summer days where the R.H. is 30% all 
day. Great belly weather!Eat your heart out!
>>>>>>Dale
  

> 
> Hi Dale... 
> 
> I think whats been said is that the shop climate is not
> controlled. I dont think anyone has said anything about
> climate control in the hot box. Perhaps a small detail
> really given the extremes in Humidity in New York, but
> still.. So.... anyone seen Steinways Hotbox ?
> 
> To take all this a step further.... I wonder how much
> difference it makes with such climate control, given the
> fact that from the first minute an instrument is place on
> the trucks to ship out, or at least from the first minute
> they are on the floor of some store... the climate is
> probably just as uncontrolled as most other places.
> 
> I mean ok... say NY Steinway installs state of the art
> building climate control systems, super seal their
> intruments and ship them off to some Jacksonville store
> where the Humidity is 90 % at 90 F. Seems to me you have
> just delayed the inevitable.... or what ?
> 
> RicB
> 
> > >   It certainly does seem strange to me that in any
> > > factory relying on compression crowning  in this age of
> > > technology would want to insure a more uniform
> > > temp./R.H. levels to srictly control emc. When I visited
> > > Mason& Hamlin the hot box temp. humidity and air
> > > circulatuion was meticously maintained for even EMC
> > > levels prior to pressing. Mason and Hamlin is rib
> > > crowning their boards by the way.
> > 
> > ...Dale Erwin
> > 
> > >


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