garimo (omirag@cruzio.com)
Wed, 10 Mar 1999 21:56:38 -0800 (PST)
Hi Judy,
We were printing cyanotypes in class tonight... so I mixed up some of
this blue toner... Everyone loved the color, sort'a teal blue. Much
nicer than that burg blue stuff.
thanks for the tip!
garimo
>
>This one works as well if not better than the more complicated formulas
>(which fell into disuse for obvious reasons) and no strange chemicals,
>scary acids, to buy and mix:
>
>Take 10 cc of solution A (the fe am citrate) & 10 of solution B (the
>pots. ferricyanide), mix with 20 ounces (500-600 cc) water and add 70
>cc of 28% acetic acid. There's plenty of latitude in dilution, strength,
>etc, but that's a start.
>
>And if you don't have ferric ammonium citrate, you can buy half a pound
>for the cost of one toning *kit.*
>
>cheers,
>
>Judy
>
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