[alt-photo] Re: back again

Vedos Projekti vedos at samk.fi
Sun Oct 23 15:37:41 GMT 2011

Moro Matti,

You can find gum arabic at Vanha Viljami, Tampere:

or ask Yliopiston Apteekki, they can get you it as fine powder (very pure but a bit expensive)... ask for gum acacia (akaasiakumi), or buy it as liquid from Wallun Painotarvike, Tampere:
that is what I use, 14 Baume and very consistent... ready to be used straight from the can... 

Hope this helps,

Onnea matkaan,

-- If you only look at what is, you might never attain what could be --

Alternative Photographic Processes
Satakunta University of Applied Sciences
vedos at samk.fi
From: alt-photo-process-list-bounces at lists.altphotolist.org [alt-photo-process-list-bounces at lists.altphotolist.org] On Behalf Of Matti Koskinen [mjkoskin at gmail.com]
Sent: 23 October 2011 17:04
To: alt-photo-process-list at lists.altphotolist.org
Subject: [alt-photo] back again

hi all,

I used to be on the old alt-photo-process-list at usask.ca long time,
but when the list moved here, didn't subscribe until now.

Finally I was able to find potassium dichromate and started doing casein
and temperaprints. I've succeed doing some temperaprints according to
late Peter Fredrick's method. Don't have any yupo, so I've used
watercolour paper with gesso. I won't try to do multi coatings, until
even a single coat works. How long does a dry unexposed temperaprint last?

Also I've been trying casein prints, but I get very bad lines when
developing a soaked print with foam brush. Probably because of
not-so-even coating.  I've tried watercolour paper sized with diluted
gesso and just plain paper. Both show the lines. Then I tried to smooth
the mixture after brushing with foam roller, but the roller leaves also
some marks.

Arabic gum I can't find from any Finnish art stores, also the PVA-glues
are hard to find, every glue is PVAc, which won't work. That's why I'm
doing casein and temperaprints, eggs and milk are very much easier to

I'm using oiled paper negatives made with Epson Photo Quality Inkjet
paper, as I can go larger than A4. I found Agfa Copyjet in A3 size, but
that's too expensive for me.

Any ideas?


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