[alt-photo] Re: I know, another sizing question

[Keith Gerling]

I've had some success using milk paint as a size for gum.  I purchased it
already made, but plan on trying this recipe soon

http://www.realmilkpaint.com/recipe.html

It looks simple and it is certainly inexpensive.

Keith

On Fri, Sep 10, 2010 at 12:11 PM, Ian Hooper <noisy at rogers.com> wrote:

> Ordinary 'cooking alum' (potassium aluminum sulphate) will harden gelatin.
> Like most alums, an acidic solution works better.
>
> -Ian
>
> -----Original Message-----
> From: alt-photo-process-list-bounces at lists.altphotolist.org
> [mailto:alt-photo-process-list-bounces at lists.altphotolist.org] On Behalf
> Of
> Trevor Cunningham
> Sent: September 9, 2010 1:41 AM
> To: The alternative photographic processes mailing list
> Subject: [alt-photo] I know, another sizing question
>
>  Disclaimer: I am aware that some prefer not to tolerate beginners in this
> forum, so humor or ignore me then if you have such regard.
>
> Situation: Plain and simple, I have gelatin resources up to my armpits, but
> no access to glyoxal/formalin/formaldehyde unless I steal it from work
> which
> I won't even consider. This is for gum printing, by the way.
>
> Potential solutions with my limited available resources (Saudi Arabia isn't
> heavy on the art supply front):
>
>    * Katherine Thayer has a reassuring article indicating that, with
>      some attention to clearing highlights with hot water, unhardened
>      gelatin is really not an issue. While I like this, and DON'T wish
>      to start an argument here over this topic, I have other factors to
>      consider below before I decide how to proceed.
>    * I have ample access to gesso. But having used it with cyanotypes,
>      wishes there was a way to seal it as much as possible to limit its
>      mixture with the emulsion. With the unusual infatuation with
>      powdered milk here, casein seems to be exceptionally cheap to come
>      by. I remember seeing mention of using casein with gesso, any
>      thoughts?
>    * I have a bag of Gamblin rabbit skin glue that I purchased in lieu
>      of the PVA product with consideration to air travel. Has anyone
>      used this glue as a size?
>
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