RE: acid pre-soak

Thanks, Loris, good to know as I like the deep blues. I am using diginegs. When I tore the larger sheets to size I did make some small test strips so will try those without a pre-soak first.

Cheers!
Judy

--
Judy Rowe Taylor
Mukilteo, WA
Art is a voice of the heart, a song of the soul.
www.enduringibis.com
jude.taylor@comcast.net or judyrowetaylor@enduringibis.com
> Judy, are you using digital negatives or printing in-camera negatives? If
> you're using digital negatives try to calibrate without using acetic or
> citric acid. These acids both changed the color of my cyanotypes (no lovely
> prussian blue anymore, something else) on every paper that I was using (not
> many though). I didn't like the resulting colors. I also found that midtone
> separation is affected negatively. I happen to like the relatively high
> contrast nature of cyanotypes, so acid treatment is not my cup of tea.
> 
> Regards,
> Loris.
> 
> -----Original Message-----
> From: jude.taylor@comcast.net [mailto:jude.taylor@comcast.net] 
> Sent: 15 Ašustos 2005 Pazartesi 21:32
> To: alt-photo-process-l@sask.usask.ca
> Subject: acid pre-soak
> 
> Regarding the earlier post suggesting acids and their respective
> concentrations for pre-soaking paper for cyanotype and other processes,
> acetic acid wasn't mentioned.  Is acetic acid in the form of white vinegar -
> grocery store brand -  as effective as citric acid for a pre-soak? I have
> been using diluted white vinegar (10 mls / 2 L diH20) as a dunk before the
> tap water rinse...and the tray is blue-stained forever...so would prefer to
> used this as I have plenty on hand.
> 
> What I plan to pre-soak is a small supply of printmaking and other fine art
> papers that have moved around the country with me during the past 20 years.
> I think it is about time to use them (smiles), but am no longer sure if they
> are buffered, sized, etc.  or even where I purchased them, except for the
> Twinrocker handmades that I purchased "on site" when I lived in
> Indianapolis, which shouldn't need soaking.  A couple pieces are Winsor
> Newton, probably watercolor papers.
> 
> Thanks!
> Judy
>