[78-L] V-Disc dewarping

[Ron L'Herault]

I've used a modified glass plate/sun method.   I have one of those warming
trays you plug in to keep buffet food warm.   I plug it in to start it
warming, put on a glass plate, the record, a second glass plate and then a
couple layers of newspaper opened over the record/glass stack.  One could
use just about anything suitable here.  It is to insulate the top a bit from
the room, letting the stack warm up more evenly.  Once the set up is warm,
flattening happens fairly fast so between the need to monitor the flattening
and the use of the newspaper, it is not a set up that I walk away from and
do something else. (sniff, sniff - hmm something burning?   Wonder what that
could be?  Oh, crap!)

Ron L

-----Original Message-----
From: 78-l-bounces at klickitat.78online.com
[mailto:78-l-bounces at klickitat.78online.com] On Behalf Of Mark Bardenwerper
Sent: Tuesday, October 29, 2013 10:44 PM
To: 78-L Mail List
Subject: Re: [78-L] V-Disc dewarping

On 10/29/2013 7:58 PM, Glenn Longwell wrote:
> I picked up about 15 V-discs this past weekend, all are warped to where
they have to be flattened to listen to.
>
> I know this is a controversial subject about using an oven.  I've used an
oven on 78s quite successfully for hundreds of discs (probably more than a
1000 actually) of varying ages and compositions, even laminated ones people
say it doesn't work for.  If it was only a couple I can potentially see
using the glass method which is much slower.  However, I've never tried it
due to the amount I've had to deal with and I'd be a couple hundred years
old before I was done flattening all of them.  For the V-discs, however,
these are the vinyl pressings.  Has anyone ever tried flattening these using
an oven method?  I'm concerned these will turn wavey like an lp left in the
sun.  Not sure how different the composition is from a modern lp.  I have
flattened 1950s 78s that appeared to be vinyl with no ill effect.  However,
unless someone tells me otherwise I'll resort to the glass method.
>
>
I accidentally found a very affective and simple way to straighten records
last week. I left a warped record under a huge book on top of my
entertainment center. One night, I left the video screen on and shut the
doors. The heat warmed the top of the cabinet sufficiently to nicely
straighten the record. This was a Varsity 10".

A more purposed way to do it would be to set a strong lamp under a piece of
wood with the record laying on top covered by a large heavy book for several
hours.

--
Mark L. Bardenwerper, Sr.

Technology...thoughtfully, responsibly.

Visit me at http://citroen.cappyfabrics.com

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