Many thanks George for this info.
I am surprised the ELP won't play lacquers, but that ends the
Why the broken piece won't fit snugly against the larger piece from
it was broken is a real puzzle and something I have never encountered
and I have a lot of experience with broken records.
It means that if I get the grooves to line up perfectly at the rim on
one end of
the broken piece, the grooves will NOT line up on the other end!
a gap is no problem as long as the grooves on both sides of it line up
I can tell the lacquer has shrunken slightly, and I can deal with
that, but glass
does not shrink, so why the large pieces won't fit together is truly
> Date: Sat, 5 Mar 2011 16:15:34 +0100
> From: George Brock-Nannestad <[log in to unmask]>
> Subject: Re: ELP turntable
> From: Patent Tactics, George Brock-Nannestad
> I did not want to repeat my praise for the ELP, because the matter
> was up not
> that many months ago, but it does offer spectacular advantages, such
> as not
> having to clean a record before sampling it.
> But now that we have learnt what it was wanted for, I think it only
> fair to
> mention that lacquer records cannot be played anyway, because the
> from the material is too weak. It does not matter whether the rim
> has a
> break; what Mike mentioned would be that there should not be a bite
> taken out
> of it. Shellac records in many pieces loosely held together with
> tape on the
> reverse side will play absolutely fine and will save you many hours of
> cementing together the jigsaw. If a bite were missing I would
> experiment with a temporary patch that only had to fulfil the
> that the reflection should be similar and that there should be no
> sudden change in outer radius. Filing a shard from another record
> for a loose
> fit in the gap might work. I have not tried it. I can foresee
> certain issues
> of groove pitch, but some experimenting would tell. The audio
> information is
> gone from your record in that spot anyway, but the erroneous sound
> you get
> for a few fractions of a second for a few turns of the record can be
> out/blanked digitally later.
> I do not think a glass disc broken into two pieces is at all
> unsalvageable. I
> am slightly worried that they do not fit together; at least the
> carrier glass
> should, but perhaps the lacquer layer has shrunk back from the
> broken edges.
> There was one Swiss archival turntable (well, in particular its
> pickup) that
> would work in this situation; it used a trailing optical fiber that
> will stay
> in almost any groove.
> John R.T. Davies used to have special jigs to support broken records
> to be
> able to play them with a normal pickup, and my personal experience
> has been
> that as long as you ensure that the stylus encounters a step DOWN at
> cracks when playing a record broken in two, you are basically fine.
> If you
> are going to use cement to fill the gap you must think globally: the
> pieces have to be twisted ever so slightly when fitting them, and
> the repair
> will then be good for both sides. Again depending on materials and
> care, you
> may handle the record carefully, e.g. for turning it over, but
> obviously it
> will not tolerate sleeving.
> We are looking forward to yet another unique jazz find!
> Best wishes,
Audio Restoration & Mastering Services
Transfers of metal parts, lacquers,
shellac and vinyl discs & tapes.
193 Baltic St
Brooklyn, NY 11201-6173
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