Re: VDB

[Susan Huber <shuber@ssisland.com>]

----- Original Message ----- 
From: "Sandy King" <sanking@clemson.edu>
To: <alt-photo-process-l@usask.ca>
Sent: Sunday, November 04, 2007 3:33 PM
Subject: Re: VDB


> Loris,
>
> My FAC was purchased from Artcraft. No idea as to the original source.
>
> Sandy
>
>
>
> At 10:34 PM +0200 11/4/07, Loris Medici wrote:
> > Sandy, who's green Ammonium Iron(III) Citrate do you use? Not B&S's I 
> > presume - because mine from B&S does indeed cause sludge formation right 
> > after mixing the sensitizer. I leave it there for two days ripening period 
> > (occasionally shaking the bottle, 2 - 3 times a day) then filter it out 
> > before using the sensitizer. A little more sludge precipitates even after 
> > that but since the amnt. is not important (a mm or so precipitation in the 
> > bottom of the 250ml bottle) I leave it there and take the sensitizer with 
> > a plastic pipette w/o disturbing it.
> >
> > I'm happy with my single coat Vandykes as long as I tone them with 
> > thiourea-gold toner. I'm not happy with my untoned Vandykes unless I 
> > double coat.
> >
> > Regards,
> > Loris.
> >
> > Quoting Sandy King <sanking@clemson.edu>:
> >
> > > I never get any sludge!! Not after 24 hours, not after 24 days.
> > >
> > > After several months the silver coats the side of the bottle, but the
> > > solution remains clear.
> > >
> > > Are you mixing with distilled water?
> > >
> > > Sandy
> > >
> > >
> > > At 2:44 PM -0500 11/4/07, Weber, Scott B wrote:
> > > > Speaking with a friend who also makes Van Dyke prints I mentioned that I
> > > > filter the "sludge" that forms at the bottom of the bottle after 24 
> > > > hours
> > > > when mixing a new batch of solution. He said that he never does this. 
> > > > Are
> > > > there any VDB printers out there with opinions on this? Filter or no 
> > > > filter?
> > > >
> > > >
> > > > Scott B. Weber
> > > > Associate Professor of Photography
> > > > Department of Fine Arts
> > > > Barry University
> > > > 11300 NE 2nd Avenue
> > > > Miami Shores, Florida 33161
> > > > (305) 899 4922
> > > >
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> > > > Barry University - Miami Shores, FL (http://www.barry.edu)
>
>
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