Re: [ARSCLIST] Can Magnetic Tape Be Frozen?

["Watsky, Lance" <lwatsky@xxxxxxxxxxxxxxx>]

This is being posted for Beth Delaney, Nederlands Institute for Sound and Vision 

"Can anyone tell me if it is acceptable to freeze magnetic sound film?  I don't seem to find in any literature that this is not a good idea. Often the literature states that it is recommended to "freeze acetate film", not differentiating between acetate image material and acetate magnetic sound film."

I personally believe that it is probably not recommended, but I wanted to check with the ARSC folks, before responding back to Beth.

Thanks,
Lance Watsky
Preservation & Media Specialist
The Georgia Archives
5800 Jonesboro Road
Morrow, GA 30260
678-364-3764 (phone)
678-364-3860 (fax)
lwatsky@xxxxxxxxxxxxxxx
www.GeorgiaArchives.org




-----Original Message-----
From: Association for Recorded Sound Discussion List
[mailto:ARSCLIST@xxxxxxx]On Behalf Of Jack Raymond
Sent: Wednesday, December 01, 2004 9:14 AM
To: ARSCLIST@xxxxxxxxxxxx
Subject: Re: [ARSCLIST] LP Groove Repair


Eric Jacobs wrote:

 > I have a 1963 LP which has a deep gouge - it looks like the needle had been
 > dropped very hard, leaving a pit in the record that is 2.5 grooves wide.
 > Depending on how I set the anti-skate, I get one of two effects: (a) the
 > stylus skips and will not continue past the gouge or (b) the stylus jumps a
 > groove, skipping 1.8 seconds of music.  I've looked at the groove under a
 > 150x microscope, and it appears that the gouge is 0.010" deep.  For the
 > really curious, I might try to photograph the damage.
 >
 > Does anyone have any experience on how to span this gouge?  Any conservation
 > techniques for filling such damage just so to make the rest of the grooves
 > playable?  Or am I just outta luck on this one.  I have a steady hand and
 > good optics/magnification.


Here is a method that works well for repairing digs on 78s, and you might try it
on your LP:  Place the record under a strong light.  Squeeze a drop of Elmer's
Glue-All onto a piece of cardboard.  Dip the point of a needle into the glue to
pick up a tiny bead of glue and -- using a magnifying glass -- transfer the glue
to the pit in the record.  Repeat until the pit is filled.  Let it dry.  Apply
more glue if necessary.  Then, when completely dry, carefully shave the glue
flat with a razor blade.  Play the record with a light stylus and with no
anti-skate pressure.  The stylus will etch a new groove, after which stylus
pressure can be returned to normal.  The nice thing about this method is that it
is reversible:  the glue does not bond tightly to the surface and can be removed
easily.

-- Jack Raymond