RE: old vs. new cyanotype

DEAR LORIS,
        To find a supplier of Oxalic Acid I went to a large laundry (clothes
washing) service. It appears that they often use it for some cleaning
method and are willing to sell a kilogram at a time to us artists. Perhaps
you can find one near you.
                 CHEERS!
                BOB

-----Original Message-----
From: Loris Medici [mailto:loris_medici@yahoo.com]
Sent: Friday, June 11, 2004 5:40 PM
To: alt-photo-process-l@sask.usask.ca
Subject: Re: old vs. new cyanotype

How this practice will affect the contrast? (I can't test if myself -
despite all the search, I couldn't find oxalic acid locally)

Regards,
Loris.

----- Original Message -----
From: "Kerik" <kerik@kerik.com>
To: <alt-photo-process-l@sask.usask.ca>
Sent: Saturday, June 12, 2004 12:30 AM
Subject: Re: old vs. new cyanotype

> > Hence, Fabriano Artistico is probably not a suitable paper for the new
> > cyanotype unless you dink around somehow. I tried coating it with
oxalic
> > acid before printing, and that did not work. One more vote for the
> > traditional.
>
> F.A. appears to be pretty highly buffered. It takes about a 5 minute soak
> in 1% oxalic acid to make it work well for pt/pd. A simple surface coating
> of OA doesn't do it. So, if you want to make it work for Cyano, an OA soak
Received on Sat Jun 12 07:28:21 2004