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

Corn Starch (Aka Maizena) works as well.
I used that when doing cool "ferrotyping" of prints

--- C.Breukel@xxxxxxx wrote:

> 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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