Paging Earl Dunlap

[Bill Ballard]

Mr. Dunlap,

If you're still on the list, maybe your email address has changed. 
Could you shine a flashlight on this matter?

List,

If Mr. Dunlap is no longer on the list, does anybody know his address?

In the interest of science......

Bill Ballard RPT
NH Chapter, P.T.G.

"May you work on interesting pianos."
     ...........Ancient Chinese Proverb

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At 8:38 AM -0400 7/25/02, Mail Delivery Subsystem wrote:
>    ----- Transcript of session follows -----
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>Date: Thu, 25 Jul 2002 08:37:11 -0400
>To: "Earl S. Dunlap, Jr." <dunlapes@home.com>
>From: Bill Ballard <yardbird@pop.vermontel.net>
>Subject: Re: Shellac vs. lacquer
>Cc: Susan Kline <sckline@attbi.com>
>Content-Type: text/plain; charset="us-ascii" ; format="flowed"
>
>At 8:10 AM -0700 7/22/02, Susan Kline quoted you:
>>By the way, any of these alcohols are very water soluble (as is acetone
>>(very much more volatile & thus more flammable) or methyl ethyl ketone (a
>>bit less so)), and when they evaporate rapidly, will chill the area drawing
>>moisture from the air--more so in humid climates. This moisture has the
>>potential to release the press in the wool! (Re: Susan Kline's correct
>>"steam in a bottle" comment on 04 Sep 2001 18:30:15)
>>
>>Earl Dunlap, Textile Chemist and lurker (with your kind permission)
>
>Dear Mr. Dunlap,
>
>Susan Kline recently re-entered your comments on ethanol/methanol 
>into a PianoTech thread on shellac as a reinforcer for the voicing 
>of hammers. (You may consider your wisdom, the gift which keeps on 
>giving). If you're still on the PianoTech list, you may have been 
>following the thread.
>
>As a textile chemist, you may be able to answer a question or two. 
>First, do any of the reinforcing resins (nitro lacquer, shellac 
>collodion (gun-cotton), keytop plastic, or plexiglass) have an 
>actual chemical effect on the wool fibers? (The mechanical effects 
>we all know and love: the coating of fibers the covering over of 
>wool fiber platelets, on through filling up the air spaces inside a 
>felt mass).
>
>Second, is the matter of the physical properties of these resins. Is 
>there a reference book which would list the elasticity for these 
>resins. (which would tell us how, as a sheathing for the fbers, they 
>would bend  or fracture during the hammer's collision with the 
>string. I don't tone for a university with a large chemistry 
>department. The only references I have are a 1976 "Machinery 
>Handbook", and a 1942 "Handbook of Chemistry and Physics" (the 
>"Rubber Bible" as my father used to call it).
>
>Thanks in advance for any leads you can offer.
>
>Bill Ballard RPT
>NH Chapter, P.T.G.
>
>"No one builds the *perfect* piano, you can only remove the 
>obstacles to that perfection during the building."
>     ...........LaRoy Edwards, Yamaha International Corp
>+++++++++++++++++++++