Re: [ARSCLIST] question regarding cleaning shellac

[Robert Brian Levy <xernaut@xxxxxxxxx>]

PLEASE! 
somebody tell me how to unsubscribe from this list!

thanks,

brian levy


At 17:28 2003-01-29 -0600, you wrote:
> Hi David,
>
>  From personal experience this is a very touchy subject for many
> collectors.  Nevertheless, please permit me to separate your
> question into
> two parts.
>
> In the short term, assuming an adequate applicator was employed,
> cleaning
> with the diluted dish washing liquid will remove a noticeable amount
> of
> contaminants & afford some sonic improvement.  It is by no
> means
> thorough.  A variety of contaminants remain including components of
> the
> commercial detergent [perfumes, oils, dyes, etc].  For the most
> part, all
> of these remaining materials are biological feed stocks to support
> future
> growth of mold & mildew.  Please remember that most liquid dish
> washing
> detergents are not very effective are removing mold & mildew nor are
> the
> formulated to rinse residue free.
>
> The use of the tooth-brush is hard to quantify.  Bristle
> configurations
> vary & what is soft to one may not be to someone else.  Relative
> to "hard"
> surfaces such as old shellac, Diamond Discs & acetates I don't
> believe a
> soft tooth brush is harmful, it's just poor at reaching into groove
> effectively.  The idea is to present a fiber mass that fits well in
> the
> groove & has the characteristics required to strongly & safely
> agitate the
> cleaning solution.  Random directionality, inappropriate fiber
> construction
> as well as the choice of fiber are variable that must be carefully
> controlled is the quality & safety of the process is to be
> assured.  This
> is why I've repeated argued that variations of painter pads are not
> as
> effective as some would believe.  Careful listening comparisons
> routinely
> demonstrate the value of better cleaning materials.
>
> It is a wonderful experience to hear the results of thorough cleaning
> of
> 78s as well as modern vinyl pressings.  We hope later this year to
> evaluate
> alternate methods for the cleaning of lacquers prior to plating in
> an
> effort to improving the quality of modern vinyl pressings.  And
> don't be
> fooled.   Great analog mastering & recording engineers are
> still among us
> as well as the facilities to produce the highest quality of
> pressings.  In
> the end we hope to re-define the standard for recorded sound with the
> goal
> of encouraging a greater effort to be made to bring digital
> recording
> technology up to this level.
>
> It matters to us & should to others, regards,
>
> Duane Goldman
>
>
> At 04:39 PM 1/23/2003 -0500, you wrote:
> > A question thrown out in general,
> > but in particular to the doctor:
> >
> > What harmful effects occur from using a detergent such as Ivory
> > liquid,
> > highly diluted, applied to a shellac disc with a soft bristled
> > tooth-brush?
> >
> > looking forward to some responses.
> >
> > David Sager
>
>      ------
> h. duane goldman, ph.d.   |   P.O. Box
> 37066   St. Louis, MO  63141
> lagniappe chem.
> ltd.           
> |   (314) 205 1388 voice/fax/modem
> "for the sound you thought you
> bought"       |  
> http://discdoc.com

--------------------------------------------
Robert Brian Levy
Language Activist; Archivist
Executive Director
Kiwat Hasinay Foundation

Box 305
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tel: 1-405-401-3928

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