RE: VDB

I always double coat VDB, bur a friend of mine reports that mixing a+b with c
just before coating, you can use only one coat. I never tried.
ciao
f

> Loris,
>
> When I did VDB (I now prefer Kallitype, more steps but much more flexible,
> good contrast control is possible) I also double coated to obtain
> acceptable Dmax,
>
> Best,
>
> Cor
>
> > -----Original Message-----
> > From: Loris Medici [mailto:loris_medici@mynet.com]
> > Sent: donderdag 13 oktober 2005 9:59
> > To: alt-photo-process-l@sask.usask.ca
> > Subject: RE: VDB
> >
> >
> > Add me to the list. I usually filter the Vandyke solution (using paper
> > coffee filter) the day after mixing it. Even doing so, the emulsion
> > shows further precipitation later (1 week after mixing, about
> > 1/4 amount
> > compared to the first precipitation). I filter it too. Much
> > later, when
> > silver plating occurs inside the bottle, I throw away the old emulsion
> > and mix new sensitizer.
> >
> > BTW, I never managed to reach good Dmax with Vandyke by just
> > one coat. I
> > always double coat it. What is your experience? Do you get good Dmax
> > with one layer Vandyke? If so, I will start to think I'm
> > doing something
> > wrong mixing it (I use directions given in Wynn White's article @
> > unblinkingeye.com) - or my concept for good Dmax is a little bir
> > exaggerated...
> >
> > Regards,
> > Loris.
> >
> > -----Original Message-----
> > From: Fabiano Busdraghi [mailto:fabusdr@yahoo.it]
> > Sent: 13 Ekim 2005 Perþembe 10:43
> > To: alt-photo-process-l@sask.usask.ca
> > Subject: Re: VDB
> >
> >
> > hi,
> > I also use the liquid on top. Mixing the solution just before
> > coating I
> > had a grainy and uneven result.
> > ciao
> > fabiano
> >
> > --- "Weber, Scott" <sweber@mail.barry.edu> ha scritto:
> >
> > > Thanks for all of the replies, I think I isolated the
> > problem. I was
> > > storing the coated paper under plastic containers that were
> > not light
> > > tight. The paper was exposed to small doses of florescent light for
> > > several hours. I do
> > > have another question about the precipitate that forms in the
> > solution.
> > > Should I mix that into a suspension before coating or is it best to
> > let it
> > > settle and just use the liquid on top?
> > > Thanks,
> > >
> > > Scott B. Weber
> > > Associate Professor of Photography
> > > Department of Fine Arts
> > > Barry University
> > > 11300 NE 2nd Avenue
> > > Miami Shores, Florida 33161
> > > (305) 899 4922
> > >
> > > -----Original Message-----
> > > From: RHobbs3@aol.com [mailto:RHobbs3@aol.com]
> > > Sent: Tuesday, October 11, 2005 8:26 PM
> > > To: alt-photo-process-l@sask.usask.ca
> > > Subject: Re: (no subject)
> > >
> > > I have used very old VDB solution succesfully, although
> > little flakes
> > > of silver seem to precipitate out of the solution.
> > >
> > > Rob
> > >
> > >
> > >
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> > > University - Miami Shores, FL (http://www.barry.edu)
> > >
> >
> >
> > HOME PAGE: http://fabiano.agriturismo-diavolino.com
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> >
> >
> >
> >
> >
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>

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Received on Thu Oct 13 02:38:49 2005