RE: Fish glue for gum prints?

Chris,

Fish glues and gelatins are very different substances. The fish gelatin
I've used has been very similar to other gelatins but with a lower melting
point (not sure if that is the right word - whereas Knox and other gelatins
"gel" at room temperature, the fish gelatin seemed to have to "dry" rather
than simply "gel"). The fish glues I've used have been very thick. Fish
glues are darker as well, ranging from a light tan (that is not transparent
but which with thin coats work fine for printing) that pours like heavy
molasses (treacle, for those living across the big swamp) to darker,
maple-syrup type of stuff.

Keith

-----Original Message-----
From: Christina Z. Anderson [mailto:zphoto@montana.net]
Sent: Wednesday, April 05, 2006 7:13 AM
To: alt-photo-process-l@usask.ca
Subject: Re: Fish glue for gum prints?

Well, John,
That was quite the common addition in books of old it seems, especially with
the Germans and Austrians. Isinglass....I thought it was no longer
available and then come to find it is a common ingredient in bookmaking or
some such thing.

I'd love it if you'd test it, but I am wondering if it would be any
different than using just plain gelatin in the mixture for a gum print? I
mean, one gelatin being from animal, one from fish...I wonder if it is more
soluble than animal gelatin or whatever?? Please do try and do tell.
Chris
(PS can you tell I'm trying hard to divert the convo from semantics to
practice :)?)

----- Original Message -----
From: "John Grocott" <john.grocott403@ntlworld.com>
To: "The List" <alt-photo-process-l@usask.ca>
Sent: Wednesday, April 05, 2006 3:36 AM
Subject: Fish glue for gum prints?

> This discussion on variations of gum printing seems to very popular with
> some of the List members. Looking thru' the Kremer catalogue of materials
> in the ''glue'' section my mind starts to boggle at the number of tests
> which could be awaiting me. But, I would not call myself a gum printer
> as I do not use gum arabic. However, many aspects of dichromate
> sensitized materials used in photo image making are similar and it is
> this that I find interesting.
> Fish glue is next on my list of tests.
> Anyone intersted? Sorry if its a bit boring.
> John Grocott - Photographist - London
> SKYPE (Video) name. CARBONS999
>
Received on Wed Apr 5 08:33:47 2006