RE: cyanotype help needed

From: Loris Medici ^lt;>
Date: 03/24/05-07:47:23 AM Z
Message-id: <006101c53078$02a195c0$ce02500a@altinyildiz.boyner>

Joe, doesn't it gain its old density (or very close to it)? When you
acidify I mean?

> -----Original Message-----
> From: Joe Smigiel []
> Sent: Thursday, March 24, 2005 3:44 PM
> To:
> Subject: Re: cyanotype help needed
> Jan,
> Any alkaline solution would probably reduce the density of
> the cyanotype and also lower the contrast. I've used weak
> ammonia solutions, borax, and even dilute film and paper
> developers to bleach back cyanotypes.
> They will turn a lovely lavender color as they bleach. Go
> slow using weak solutions in order to gauge the bleaching
> effect with some precision. I would try a test on a similar
> piece of printed paper in order to determine the proper
> strength solution to use. After rewashing the print I always
> acidify it again using weak acetic or citric acid and this
> returns it to a blue color.
Received on Thu Mar 24 08:14:05 2005

This archive was generated by hypermail 2.1.8 : 04/08/05-09:31:01 AM Z CST