[alt-photo] Re: Dichromated Gelatin Formula

[Francesco Fragomeni]

Thanks Gordon. I found a rather useful description of the process in
Cassell's Cyclopedia of Photography, 1911. I'm going to experiment with
whats described in there.

-Francesco

On Fri, Sep 21, 2012 at 5:28 PM, Gordon J. Holtslander <gjh at shaw.ca> wrote:

> On 9/20/2012 2:31 PM, Francesco Fragomeni wrote:
>
>> Hi all,
>>
>> Does anyone have a formula for mixing a 20% dichromated gelatin using Knox
>> 250 Bloom gelatin and Potassium Dichromate? This would be for use in the
>> Woodburytype process. Also, if you have experience with this, how thick do
>> you recommend the gelatin layer be for the relief?
>>
>> Thanks,
>> Francesco
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>>
> In Crawford's "Keepers of the Light" he indicates there is a good
> technical summary of Woodburytype in
>
> The Encylopedia of photography, New York 1898, pp 469-470, 522-523
>
> and a couple of others.  I can list these if interested.
>
> Gord
>
> --
> Gordon J. Holtslander
> gjh at shaw.ca
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