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ARSCLIST  August 2014

ARSCLIST August 2014

Subject:

Re: Transcription disc cleaning - unusual issue

From:

Corey Bailey <[log in to unmask]>

Reply-To:

Association for Recorded Sound Discussion List <[log in to unmask]>

Date:

Thu, 7 Aug 2014 23:01:18 -0700

Content-Type:

text/plain

Parts/Attachments:

Parts/Attachments

text/plain (67 lines)

Hi Jeanette,

Insect debris and leavings can be dealt with using the usual disc  
cleaners that are safe for lacquer. First, you need to inspect each  
disc carefully, looking for any cracks or other flaws that could  
possibly allow the cleaning solution to loosen the lacquer coating.  
Use a microscope if you have one available. Insect debris and leavings  
can be stubborn and may require more than one cleaning cycle using  
your preferred solution. If the disc surface is water tight, I will  
let the solution stand for a few minutes before removing it because  
insect leavings will usually contain enzymes that need to be dissolved.
I have a “junker” turntable purchased at a thrift store as my cleaning  
platform. Basically, I use it like a Lazy-Susan that is 12”in diameter.

The cleaning cycle I usually use, for those discs that will tolerate a  
wet approach, is to start by blowing off any dust and loose matter  
with canned air in a well ventilated area (outside works well for  
this!).  If useful, I will carefully brush the disc in the direction  
of the grooves to loosen anything before applying a wet solution and  
use the canned air a second time. I then apply the cleaning solution  
from the dead wax area (carefully avoiding the label) out to the edge  
of the disc using a small spray bottle. I brush the solution in the  
direction of the grooves using a trimmed, fine bristle, artists brush  
working from the center out while rotating the disc (outside-in works  
as well). I remove the excess fluid using a clean lint free cloth and  
vacuum the surface using a modified wet-dry vacuum. I apply a rinse of  
distilled water and use the same procedure. Inspect the surface in  
between each process to assess the results and repeat as necessary.

I live reasonably nearby (North of Santa Clarita) if you feel the need  
for a second opinion.


Cheers!

Corey
Corey Bailey Audio Engineering
www.baileyzone.net


Quoting Jeanette Berard <[log in to unmask]>:

> I have come across an issue I have not previously seen - black  
> lacquer discs with damage related to termites.  The discs have  
> debris from consumption of the paper sleeves adhered to ( or perhaps  
> embedded in?) the lacquer.
>
> Has anyone out there ever encountered this issue?  Is it possible to  
> clean these?  I have not yet made any tests, right now I'm just  
> gathering information.
>
> This is a small collection recently received, and no, there aren't  
> any live termites.
>
> Thanks,
> Jeanette
>
>
>
> Jeanette Berard, MLS, CA
> Special Collections Librarian
> Thousand Oaks Library System
> (805) 449-2660 xt7328
> [log in to unmask]
>
>

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