Dear Mustafa,

This idea is mentioned as an unconfirmed speculation of Canadian 
harpsichord maker, Tillman Steckner.

See:

https://books.google.co.uk/books?id=t4jjBwAAQBAJ&pg=PA25&lpg=PA25&dq=kottick+soundboard+sunlight&source=bl&ots=QUvQ0t3NXi&sig=9jIoa-G4bmhccyauhfY9Bb7V6G4&hl=en&sa=X&ved=0ahUKEwj2_eC4jNLKAhWBvBQKHTfYAo8Q6AEILzAD#v=onepage&q=kottick%20soundboard%20sunlight&f=false

Brian Blood
Haslemere

On 1/30/2016 4:27 PM, Mustafa Umut Sarac wrote:
> Dear Jack,
>
> I read that article at an interior corner of scientific american. I think
> someone might know about it. Its 26 years ago.
>
> Mustafa Umut Sarac
> Istanbul
>
> On Sat, Jan 30, 2016 at 5:07 PM, Jack Peters <[log in to unmask]> wrote:
>
>> Mustafa, No but I would like to read this article. Jack Peters Seattle
>>
>> On Sat, Jan 30, 2016 at 6:59 AM, Mustafa Umut Sarac <
>> [log in to unmask]> wrote:
>>
>>> Hello there,
>>>
>>> I had been read an article at scientific american , one of the luthier
>> had
>>> been invited to build a harpsichord for Johann Sebastian Bach House or
>>> Church and he graduated the soundboard with directing it to the bright
>>> sunlight and equal the dark and light areas with removing the wood. He
>>> reports result was excellent.
>>>
>>> Is it accepted method now ?
>>>
>>> Best,
>>>
>>> Mustafa Umut Sarac
>>> Istanbul
>>> [log in to unmask]
>>>
>>> ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
>>> Note:  opinions  expressed on HPSCHD-L are those of the  individual con-
>>> tributors and not necessarily  those of the list owners  nor of the Uni-
>>> versity of Iowa.  For a brief  summary of list  commands, send mail to
>>> [log in to unmask]  saying  HELP .
>>> ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
>>>
>> ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
>> Note:  opinions  expressed on HPSCHD-L are those of the  individual con-
>> tributors and not necessarily  those of the list owners  nor of the Uni-
>> versity of Iowa.  For a brief  summary of list  commands, send mail to
>> [log in to unmask]  saying  HELP .
>> ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
>>
> ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
> Note:  opinions  expressed on HPSCHD-L are those of the  individual con-
> tributors and not necessarily  those of the list owners  nor of the Uni-
> versity of Iowa.  For a brief  summary of list  commands, send mail to
> [log in to unmask]  saying  HELP .
> ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::



::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
Note:  opinions  expressed on HPSCHD-L are those of the  individual con-
tributors and not necessarily  those of the list owners  nor of the Uni-
versity of Iowa.  For a brief  summary of list  commands, send mail to
[log in to unmask]  saying  HELP .
::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::