[alt-photo] Re: VDB problem

[francis schanberger]

I process in tap water (Dayton, Ohio).

Try acidifying the Fabriano. I haven't printed VDB on it.


-francis


On Fri, Jan 21, 2011 at 1:42 PM, John Brewer <john at johnbrewerphotography.com
> wrote:

> Hi Francis,
>
> Thanks for your comments. No, I didn't let the solution ripen, I'll try
> again tomorrow or Sunday. The print situation is odd, I'm using Fabriano
> Artistico Extra White HP 300gsm. This has worked in the past with VDB and
> other alt processes so I don't think it's a soaking in the paper problem,
> unless it is a precipitate that got through the filter sitting on the
> surface. Do you process in tap water or distilled water?
>
> John.
>
> On 21 January 2011 17:06, francis schanberger <frangst at gmail.com> wrote:
>
> > John,
> >
> > Did you let the solution ripen (sit for 24 -48 hours) after mixing?
> > Regarding the precipitate, I have noticed that if a lot forms during
> mixing
> > that most of it will go into solution after about a week.
> >
> > I never have had to microwave. I usually mix the VDB in a 500mL bottle
> and
> > carefully transfer the solution, using a transfer (plastic) pipette, into
> > 30mL dropper bottles after it has ripened.
> >
> > Regarding the print symptoms, I have never encountered what you have
> > described. It sounds like the emulsion isn't sinking into the paper.
> >
> > -francis
> >
> >
> >
> > --
> > francis schanberger
> >
> > www.francisschanberger.com
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> > Alt-photo-process-list | http://altphotolist.org/listinfo
> >
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-- 
francis schanberger

www.francisschanberger.com