Re: Hand collotype in process
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- Subject: Re: Hand collotype in process
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- Date: Thu, 18 Jun 2009 04:06:58 +0200
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i just did, but didn't really find anything on coating (i'm operating on high school french too).
i found this on the other site:
it seems they use some kind of support for the emulsion.
on the phototypie site, it says that copper once was used instead of glass. but it's not used anymore, "for various reasons" and "the biggest one being the price".
so, if one can use copper instead of glass, one could probably use a cheap sheet of galvanized steel too and use the good old magnetic sign material for a coating frame...
> -----Ursprüngliche Nachricht-----
> Von: "Jack Brubaker" <firstname.lastname@example.org>
> Gesendet: 18.06.09 03:34:33
> An: email@example.com
> Betreff: Re: Hand collotype in process
> On Wed, Jun 17, 2009 at 8:28 PM, <firstname.lastname@example.org> wrote:
> > and how do you people coat emulsions on glass plates? freehand with a comb (rather thin coating) or with some kind of frame.
> Look at the link Tom posted: http://www.phototypie.net
> Even with failed high school French from half a century ago I figured
> out a lot by going through the long set of photos and discription on
> the site. My question, is why do they use glass? A less fragile sub
> would seem a lot less trouble. Is there something about glass that
> creates a better bond or do they flash it from the back to help bond
> it? It seems that a metal plate could be grained the same way just as
> zinc plates are for lithography.
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