Hi: I was able to tone the cyanotype T-shirts I made and inadvertently "bleached" in the laundry. I soaked them in a tannic acid solution.
I did get impatient and add some vinegar - this speeded things up but changed the tone to a purplish brown, instead of a reddish brown. Will have to fiddle with toning cyanotypes now. I will wash the T-shirt again and see if the toned image tolerates laundry detergent. --------------------------------------------------------- Gordon J. Holtslander Dept. of Biology hol...@duke.usask.ca 112 Science Place http://duke.usask.ca/~holtsg University of Saskatchewan Tel (306) 966-4433 Saskatoon, Saskatchewan Fax (306) 966-4461 Canada S7N 5E2 ---------------------------------------------------------
