[alt-photo] Re: casein history

Alberto Novo alt.list at albertonovo.it
Thu Jul 12 05:33:56 GMT 2012

> Where did you first read about it? What year? Who taught you? Are you continuing to do the process?

A complicated question because I am not able to remember a definite year. 
For sure I was aware of this process (chiefly from Theisen website, more or 
less in 2002) before reading the article on P.F., but I was not interested 
until I decided to print one-shot gum bichromate and it had been then that I 
remembered Werth's notes on P.F.
After, I looked at some patents to see also how industry managed the 
dissolution of casein for screen etching. 


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