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Re: [ARSCLIST] Fw: [ARSCLIST] Record flattening
Same here,although I would use the term
"flattening",which is why I never tried it.
Roger Kulp
--- Dick Spottswood <dick@xxxxxxxx> wrote:
> ----- Forwarded by Dick Spottswood/dick/AmericanU on
> 10/23/2006 07:32 PM
> -----
>
> Dick Spottswood/dick/AmericanU
> 10/23/2006 07:24 PM
>
> To
> ericj@xxxxxxxxxxxxxxxxxxx
> cc
>
> Subject
> Re: [ARSCLIST] Record flattening
>
>
>
>
>
> Two hours to slowly
> heat the disc, and another two hours for the disc to
> cool.
> It will leave a smooth shiny area on convex surfaces
> as
> they get flattened, but under a microscope the
> grooves are
> unaffected.
>
> I've never been convinced that you can apply heat to
> flatten a disc
> without partially collapsing groove walls in the
> process. I don't know
> about 33s, but heat-flattened 78s sound hissy to my
> ears.
>
> Before and after photos under that microscope would
> be interesting to see.
>
> Dick
>
>
>
>
> Eric Jacobs <ericj@xxxxxxxxxxxxxxxxxxx>
> Sent by: Association for Recorded Sound Discussion
> List <ARSCLIST@xxxxxxx>
> 10/23/2006 06:38 PM
> Please respond to
> ericj@xxxxxxxxxxxxxxxxxxx
>
>
> To
> ARSCLIST@xxxxxxxxxxxx
> cc
>
> Subject
> Re: [ARSCLIST] Record flattening
>
>
>
>
>
>
> To my knowledge, we are the first (perhaps only) to
> use this
> tool on disc media other than LPs. Neither the
> manufacturer
> nor the retailers could offer any experience or
> guidance.
>
> It works on shellacs - we have one, and use it
> regularly.
> Takes about 4 hours to flatten a disc. Two hours to
> slowly
> heat the disc, and another two hours for the disc to
> cool.
> It will leave a smooth shiny area on convex surfaces
> as
> they get flattened, but under a microscope the
> grooves are
> unaffected. We also use this on dictation discs
> that have
> been damaged by paperclips or other types of
> creases/folds,
> and it works on the LPs that it was originally
> designed for.
> Some media may require multiple flattening cycles to
> pull
> the warps/creases out - it's taken up to 8 hours
> with some
> types of discs. We've done extensive experiments
> with
> this to figure out the right timing of
> heating-to-cooling
> and the number of cycles which will have the least
> impact
> on the media. We've pulled as much as 1/4" to 3/8"
> warps
> out of shellacs - nothing bigger really. The
> results are
> far better than doing a half-speed transfer, and we
> know
> how to get consistent results.
>
> The Air Tight device is a pretty big investment. If
> you
> need to simply have some discs flattened, we do
> offer that
> as an affordable service. If you want to
> try-before-you-buy,
> you can send your warped discs to us and see if you
> like the
> results.
>
> Eric Jacobs
> General Manager
>
> The Audio Archive
> tel: 408.221.2128
> fax: 408.549.9867
> mailto:EricJ@xxxxxxxxxxxxxxxxxxx
>
>
>
>
> -----Original Message-----
> From: Association for Recorded Sound Discussion List
> [mailto:ARSCLIST@xxxxxxx]On Behalf Of Steven Smolian
> Sent: Monday, October 23, 2006 1:31 PM
> To: ARSCLIST@xxxxxxxxxxxx
> Subject: [ARSCLIST] Record flattening
>
>
> In the current high-end catalog, Musicdirect, a
> record flattening machine
> is
> offered. It's at the bottom of p. 30 and called
> "Air Tight DT-01." Anyone
> have experience with it?
>
> I can't find a manufacter on the net so can't ask
> him questions. How does
> it work on 78s is the big one.
>
> Steve Smolian
>
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