[alt-photo] Subject: Re: paper and cyanotype

Greg Franco gfrancophoto at gmail.com
Wed Feb 22 04:20:52 GMT 2012


I have also found it easier to get consistent results by exposing bone dry 
and taking the humidity out of the equation for the most part.  I tested 7 
or 8 papers last summer and got my best results using classic formula 1:1 on 
Arches 140 lbs. hot press watercolor paper developed in .20 % HCL... deeper 
blues and longer scale than I was able to get on Platine or Cot 320.  The 
exposure times using HCL development decreased dramatically compared to 
water development... 120 units on my Nuarc 26-1k(about 4 minutes), whereas 
it takes 180 units for platinum/palladium.

Greg Franco

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I can imagine / empathize with your frustration! Only after days of
struggle (in 2003) I remembered reading Christopher James'
recommendation / method of exposing bone dry paper (done thoroughly,
with a hairdryer set to the max. temperature), and that saved my life
- what a relief! Post humidification still stays as a viable
(optional) method; one may get few more steps in the highlights...

Very interesting indeed (< 2 mins. exposure), that's in the park of
gum exposures! Never experienced anything like this. Unfortunately
Buxton and the other / new Herschel paper are both out of my scope...

Regards,
Loris.
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