Re: [ARSCLIST] Audiodisc acetates with the while filmy surface

[Richard Warren <richard.warren@xxxxxxxx>]

Hi Duane,

Thanks for your message. There was no intent to ignore or dismiss 
your methods (I'd seen your reply and just wanted to add an option 
that has worked here). Since discovering your products, I haven't had 
to deal with decomposing "acetates" and thus haven't yet had a chance 
to try Disc Doctor methods on them. I certainly hope they'll work 
more easily than the older ones.

Best wishes, Richard

At 09:41 AM 3/25/2008, you wrote:
> Hi Richard,
>
> With all due respect, I will repeat my earlier remarks.  It has been 
> demonstrated for over 20 years that the residues in question can be 
> safely & thoroughly removed with properly configured blends of ionic 
> & non-ionic surfactants.  This approach applies to heavy deposits as 
> well as light coatings.
>
> In extreme cases augmenting the primary formulation with a 
> biochemical research grade buffer can increase the capacity of the 
> cleaning solution & thus increase efficiency.  Safety with these 
> materials has never been an issue.
>
> The differences are audible not just visual.
>
> Regards,
>
> Duane Goldman
>
> Richard Warren wrote:
> > Hi Tom,
> >
> > The whitish substance is a product of chemical deterioration. My 
> > experience suggests
> >
> > 1) Try playing discs as they are -- sometimes the goo doesn't sound 
> > (though it may clog the stylus and cause mis-tracking, in which 
> > case you can play each side in segments). You can try playing the 
> > discs wet, too, though usually the goo prevents this method from 
> > doing any good. ALWAYS copy the discs this way first, before any 
> > cleaning, in case the lacquer is decayed enough to be ready to fall 
> > off the base.
> >
> > 2) The goo is difficult to remove. I've had best results using Lane 
> > Audio's fluid with a painting pad to apply, as they suggest. This 
> > method may take repeated soakings and cleanings (scrubbings) in order
> > to work. The results can be variable, depending on the degree of 
> > degradation and can, alas, take the lacquer off the base, hence the 
> > warning to copy before cleaning.
> >
> > Good luck, Richard
> >
> > .At 10:55 PM 3/24/2008, you wrote:
> > > Is there any treatment that I can do to some AudioDisc acetates 
> > > that have a milky white coating on the surface? Is it OK to use a 
> > > non-alcohol cleaning solution or simple diluted ivory and a 
> > > sponge? Will playing the disks with the substance on them ruin 
> > > them? This batch appears to be wide-groove, probably 78RPM, do not 
> > > know much else about them. They would date from the mid-50's.
> > >
> > > -- Tom Fine
> --
> H. Duane Goldman Lagniappe Chemicals Ltd. PO Box 37066 St. Louis, MO 
> 63141 v/f 314 205 1388 http://discdoc.com