Re: [ARSCLIST] identifying acetate substrates

[Robert Hodge <rjhodge@xxxxxxx>]

Come to think of it , even shellac was used for lacquer based discs.
I have found several  blue label COLUMBIA 10 inch acoustic recordings
having been recycled by them having received a coating of lacquer. This
becomes extremely evident when the new paper lable is lost and the
original  Columbia label appears making this identification easy..  A
pilot pin hole had also been drilled.

Any port in a storm, I guess.

Robert Hodge,
Senior Engineer
Belfer Audio Archive
Syracuse University
222 Waverly Ave .
Syracuse N.Y. 13244-2010

315-443- 7971
FAX-315-443-4866

>>> smolians@xxxxxxxxx 07/21/05 7:33 PM >>>
What we forget is that not only was aluminum unavailable for use as the
base
of lacquer records during the war, but so were many chemicals.  Thus
the
makeup of the lacquer may well be different froim that used earlier.
I've
seem memos from RCA addressing this issue.

That means that cleaing and chemical restoration products may affect
them in
unexpected ways, the most unexpected is that the old ways may not work
at
all.

Answer to David's question re: use of glass in Canada in 1940.  Canada
was
at war before the U.S. was and may have been getting blanks from
elsewhere.
Were convoys coming back empty?  An interesting historical question.

Steve Smolian


----- Original Message -----
From: "Brandon Burke" <burke@xxxxxxxxxxxxxxxxxxx>
To: <ARSCLIST@xxxxxxxxxxxx>
Sent: Thursday, July 21, 2005 6:45 PM
Subject: Re: [ARSCLIST] identifying acetate substrates


> At 03:11 PM 7/21/2005, David Lennick wrote:
>>It's also been my experience that glass discs don't tend to show
palmitic
>>acid,
>>but maybe I've just been lucky.
>
> Actually, we were talking about this very point earlier today.  I too
have
> found that discs showing palmitic acid are more often aluminum.
>
> Brandon
>
>
> _______________________________________
> Brandon Burke
> Archival Specialist
> Hoover Institution Archives
> Stanford University
> Stanford, CA 94305-6010
> voice: 650.724.9711
> fax: 650.725.3445
> email: burke@xxxxxxxxxxxxxxxxxxx
>
>
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