[pure-silver] Re: newton ring problem figured out

Janet,

Another trick to get rid of Newton rings might be: get some talcium
(sp?) powder. I used to use powdered latex gloves (these are banded
nowadays, I believe the powder was not talcium but rather organic,
something like maize powder, this powder could give rise to alergic
reactions, ie rash), I would snap such glove near (not above) the glass
carrier). A minute amount of powder would land on the glass surface,
preventing Newton rings. You might rig something up with a airbulb and
some inert powder, puffing near the carrier (I remember an device my
mother used to mark the length of a dress, a bulb filled with talcium, a
hose and a nozzle on a stand..)

Anyway, nowadays I have AN glass each carrier I use..

Best,

Cor

> -----Original Message-----
> From: pure-silver-bounce@xxxxxxxxxxxxx [mailto:pure-silver-
> bounce@xxxxxxxxxxxxx] On Behalf Of Janet Cull
> Sent: maandag 23 juli 2007 5:41
> To: pure-silver@xxxxxxxxxxxxx
> Subject: [pure-silver] Re: newton ring problem figured out
> 
> I haven't followed every post in this thread, but I thought I'd add
> that I think I've found *my* fix for newton rings.  So far it's
> worked, anyway.
> 
> I have a Durst enlarger, so that means the negative holder has glass
> top and bottom with blades for cropping.  Before I would cut small
> strips of paper and tape them down to the side edges of the carrier
> and lay the negative on top.  Sometimes (rarely) it helped.  Mostly
> it would just minimize or move the rings to another area.
> 
> Now I lay 1 strip on top of the negative at the edge of the carrier,
> and close.  So far it's worked in every instance.
> 
> I have no experience with the glass you all speak of, though it's
> been suggested to me often.
> 
> Janet
> 
> 
> On Jul 22, 2007, at 11:33 PM, Bogdan Karasek wrote:
> 
> > Hi,
> >
> > But then the AN would be under the neg and not between the neg and
> > light source which is were it should be if it is to be effective?
No?
> >
> > I think we're back to square one :(
> >
> > The only solution, new AN with the proper bevel!
> >
> > Cheers,
> > Bogdan
> >
> > hksvk wrote:
> >
> >> Any chance the negative carrier can be installed in the enlarger
> >> the other
> >> way, ie. 'upside down'?   --Harry.
> >>
> >>>>>> -----Original Message-----
> >>>>>> From: pure-silver-bounce@xxxxxxxxxxxxx
> >>>>>> [mailto:pure-silver-bounce@xxxxxxxxxxxxx] On Behalf Of Shannon
> >>>>>> Stoney
> >>>>>> Sent: Friday, July 20, 2007 12:09 PM
> >>>>>> To: pure-silver@xxxxxxxxxxxxx
> >>>>>> Subject: [pure-silver] newton ring problem figured out
> >>>>>>
> >>>>>>
> >>>>>> A few months ago I posted a question about what was causing a
> >>>>>> weird
> >>>>>> white ring on my prints. It was diagnosed as a symptom of
Newton
> >>>>>> Rings,
> >>>>>> and then the question was:  why did the Newton rings form?  I
> >>>>>> had to
> >>>>>> leave Houston where my darkroom is for a few months, but last
> >>>>>> weekend I
> >>>>>> was back in Houston and I investigated the problem further. I
> >>>>>> found
> >>>>>> that the glass carrier does have anti-newton glass on top, but
> >>>>>> the
> >>>>>> glass is beveled so that the rough side is up!
> >>>>>>
> >>>>>> The discussion on this list made me understand that the rough
> >>>>>> side
> >>>>>> should be in contact with the film base side of the negative.
> >>>>>> But, in
> >>>>>> my carrier, the way it is beveled forces you to put the top
glass
> >>>>>> in so
> >>>>>> that the smooth side touches the film base.
> >>>>>>
> >>>>>> I guess the only solution is to have the glass re-beveled so
that
> >>>>>> the
> >>>>>> rough side is in contact with the film base side of the
negative,
> >>>>>> correct?
> >>>>>>
> >>>>>> --shannon
> >>>>>>
> >>
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> >
> > --
> >
> >
> >
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> 
>
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