[CAUT] FW: Re: crack

[Ed Sutton]

I have wondered if a space blanket, shiny side out, on the bottom of the 
piano, would help.
As I recall a black surface absorbs about 6 times as much radiant heat as an 
equivalent reflective surface.
Ed S.

----- Original Message ----- 
From: "Don" <pianotuna at accesscomm.ca>
To: <caut at ptg.org>
Sent: Wednesday, June 24, 2009 7:14 AM
Subject: Re: [CAUT] FW: Re: crack


> Hi,
>
> I've had two clients with radiant floor heating and grand pianos. Both 
> have
> built small platforms with vents in the sides which their pianos live on.
> The platform stops the radiant heat from striking the piano--though there
> is some secondary re radiation from the platform itself. The bottom 
> surface
> of the platform was covered in aluminum foil.
>
> The end result was much better tuning stability.
>
> I have a third client with a 7'8" piano who has a full DC system with
> bottom cover. This does not give the type of stability I desire for my
> clients--but it does help. The bottom cover made a large difference.
>
> At 06:20 PM 6/23/2009 -0700, you wrote:
>>Hi Jeff,
>>In my experience, it is very difficult to keep a piano in tune with such a
>>heating system. It is as if you placed the piano directly over the heat
>>source.  We would normally advise clients not to place the piano directly
>>over a forced air heat duct or in its path and yet with radiant floor heat
>>one has no choice.  Putting a thick carpet (with pad) under a grand piano
>>may disperse the heat a little bit, but it doesn't solve the problem
>>completely.  I used to have radiant floor heat in my previous home.  It 
>>was
>>nice for people (and pets) because your feet are always warm, but 
>>furniture
>>squeaked and groaned from loosening joints.  It seemed drier than other
>>types of heat.
>>
>>Depending on how it is installed, it may not be as bad for an upright that
>>is against the wall.  Sometimes the coils are not extended all the way to
>>the walls and an upright just misses sitting directly over them.
>>
>>Jeannie Grassi, RPT
>>Bainbridge Island, WA
>>
>>-----Original Message-----
>>From: caut-bounces at ptg.org [mailto:caut-bounces at ptg.org] On Behalf Of Jeff
>>Stickney
>>Sent: Tuesday, June 23, 2009 11:17 AM
>>To: caut at ptg.org
>>Subject: Re: [CAUT] FW: Re: crack
>>
>>If this is a gray market Yamaha, I have a customer who purchased one and
>>had it shipped to dry Montana.  The cracks didn't appear instantly, but
>>they are definitely there now.  He also has radiant floor heat.  Anyone
>>have any idea if that heat source has a drying/heating effect on pianos
>>- more than forced air or steam sources?  I know it warms cabinets,
>>furniture, etc. noticeably.
>>
>>Jeff Stickney
>>
>>Mark Schecter wrote:
>>> Hi, Dave.
>>>
>>> I looked at the photos, and on a whim, ran the serial
>>> (http://tinyurl.com/mwmmox). The piano, made in 1977, is not a US
>>> Yamaha. So, especially if it lived its early life in humid Japan, it
>>> may have been a less than ideal candidate to survive South Texas. Clue?
>>>
>>> I agree, I doubt the crack resulted from moving the piano. It might
>>> not have been noticed before, but it probably didn't just suddenly
>>> open. In any event, I doubt Yamaha would be very sympathetic - they
>>> have tried to caveat the emptor.
>>>
>>> -Mark
>>>
>>>
>>>
>>> David Ilvedson wrote:
>>>> List,
>>>>
>>>> A furniture repair fellow I do work for, emailed me some photos for a
>>>> moving claim.   From the info given, I thought it wasn't moving
>>>> damage.   What do you guys think?
>>>>
>>>>
>>>>> Hi David,
>>>>
>>>> Here are the photos.  The customer says he heard it crack as the
>>>> movers were taking it out of the room.  Origin address was in South
>>>>  Texas, very hot and dry.   Is this even repairable?<
>>>
>>
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> 05:54:00
>>
> Regards,
> Don Rose, B.Mus., A.M.U.S., A.MUS., R.P.T.
> Non calor sed umor est qui nobis incommodat
>
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>
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