[alt-photo] Re: fumed silica

[Francesco Fragomeni]

Dick,

I'll contact you via email off the list shortly. I've sent a message to the
artist, his name is Peter Pitcher, via facebook to get his email address so
that I can connect you with him. I'm going to send you an image so you can
see what he's doing.

Best,
Francesco
www.francescofragomeni.com



On Fri, Dec 16, 2011 at 1:25 PM, Loris Medici <mail at loris.medici.name>wrote:

> Thanks much for sharing this Richard,
>
> I would like to ask something: How does silica fume (or fumed silica)
> physically act? I mean, does it have a tendency to get airborne
> easily? Reading this page, I think we definitely wouldn't want to
> inhale silica: http://en.wikipedia.org/wiki/Silicosis.
>
> From the page:
> "...Silica flour is nearly pure SiO2 finely ground. Silica flour has
> been used as a polisher or buffer, as well as paint extender,
> abrasive, and filler for cosmetics. Silica flour has been associated
> with all types of silicosis, including acute silicosis.
> Silicosis is due to deposition of fine respirable dust (less than 10
> micrometers in diameter) containing crystalline silicon dioxide in the
> form of alpha-quartz, cristobalite, or tridymite..."
> (In my understanding, silica fume / fumed silica is a more finely
> ground / synthesized form of - the above mentioned - silica flour,
> right?)
>
> Thanks again & regards,
> Loris.
>
>
> 2011/12/16 Richard Sullivan <richsul at earthlink.net>:
> > We've gotten some very positive reports on this from the field. At least
> one
> > atelier printer is using it for their platinum work.
> >
> > It's still in its experimental stage. There are numerous ways it can be
> used
> > so the permutations are virtually endless.
> >
> > The best way to start may be using it dry. The Athenatype video on Vimeo
> is
> > a good tutorial The first part is dry coating:
> >        http://thecarbonworks.com/blog/?cat=38
> >
> >
> > Compiled notes:
> >        http://thecarbonworks.com/blog/?p=16
> >
> >
> > Used on Cyanotype:
> >        http://thecarbonworks.com/blog/?cat=4
> >
> > We have done one test that indicates that it makes Pt/Pd work well on
> > buffered papers and several reports from the field that confirm this.
> Howard
> > Efner thinks this could be due to the Lewis pH effect.
> >
> > --Dick Sullivan
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