The graphite disk is part of the Simon Yorke S7 turntable. The newer
Simon Yorke turntables also come with a graphite disk. The graphite disks
are only available in 12-inch diameters. We use the graphite disk with
vinyl LPs and dictation discs.
Most of the images of transcription discs on my Google+ page are shown
with a clear 16-inch CNC machined support platter with special edge
beveling to minimize cleaning fluid from seeping around the edges onto the
back side of the disc when cleaning. They provide full support for a
16-inch disc to prevent any flexing when handling or cleaning. We also
use these for broken media as a surface for reconstruction and turning
re-assembled discs over for the opposite side. The support platters are
extremely flat and rigid - they are manufactured from the same materials
used in semiconductor manufacturing (no out-gassing, non-absorptive).
These support platters are custom.
Iım not sure how other archives and studios handle glass and broken media,
but these support platters are essential for our work. If there were
sufficient demand, we could manufacture a batch of support platters and
offer them for sale. Iıve not seen anything like them available
The Audio Archive, Inc.
1325 Howard Ave, #906
Burlingame, CA 94010
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Disc and Tape Audio Transfer Services and Preservation Consulting
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On 7/17/14, 5:01 PM, "David Breneman" <[log in to unmask]> wrote:
>Von: Eric Jacobs <[log in to unmask]>
>> For those unfamiliar with glass discs, here are a few images of glass
>> discs, both unbroken, as well as a broken disc with a missing piece
>> cleaned prior to transfer.
>Is the graphite disk mentioned in the captions a commercial
>product, or is it something you had custom made?
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