John
I thought that was an open forum where could contribute to the discussion at 
any time.
In answer to your question a guy called Steinbock got me started in gum. He 
made small monochrome single eexposure gum prints with a wide range if tones in 
the style of the 'little gem' from the thirties. All I learnt from him was 
that one needed gum and dichromate. Peter Marshall decided to have go at it. He 
got me some dichromate and already had some gum arabic from my water-colour 
painting. I worked out the proportions and the pigments and the papers for 
myself to be able to make 20 x 16 multicolour gum prints that good enough to get 
prints into international exhibitions and earn me RPS distinctions.
It was only when I was asked to run workshops running a range of alternative 
processes that I made a point of researching other processes and also gum. I 
was good that I had not read a book on gum printing as the ones I found seemed 
to contain so much overcomplication and nonsense that I could hardly believe 
it. Storing particular levels of hue of pigmented gum in a range of bottles and 
measuring the pigment from the tube in mm were kind of nonsense I just found 
laughable. The manuals certainly did not help in making good gum prints. As i 
went back over the years I saw the same nonsense being repeated from decade to 
decade and from century to century. There was one book with an amorphous blob 
that had apparently resulted from multiple exposures. I was told that sixteen 
exposures were needed to make a good gum print with a good range of tone but 
this was only because the author did not understand the relationships between 
the various factors probably through lack of experience,
The book I did find, for which I have great deal of respect, was 'The Keepers 
of Light'' which provided a guide to our workshops but we tested everything 
first and sometimes went down a different path as a result. 
If you are not ready to learn and experiment you have given up on life. Over 
the years we have used 'oddities' in workshops to explore things further. This 
led to our retro-invention programme where we developed new and improved and 
more simple ways of making cyanotypes and chrysotypes, established a good 
theory of how the first photograph was   made by   making in camera asphaltum 
prints although all the academic literature said it was impossible. The academics 
had never done it ! We also had some fun seeing how we would have photographed 
a moving horse a la Muybridge using 12 10 x 8 cameras and a polo pony ( see 
the web site). That was fun and I was told that i was one of the most 
enlightening educational experiences one lecturer in photography had ever had.
We also founded APIS, set up new conferences on the part science has played 
in the development of the art of photography, this is called 'The Object Glass 
of Science' We hold this at Oxford University and this September we are 
combining it with APIS. This July we are having a conference at Durham Cathedral 
called 'The Light from the Darkness' where we will be able to see some of the 
finest platinum prints ever made.. We have had weekends looking into how Julia 
Margeret Cameron made her prints and how women practised photography in the 19C. 
We keep learning.
You are right John. one must stay ready to learn and to question what the 
gurus say.
Terry
In a message dated 6/4/06 11:15:46 pm, john.grocott403@ntlworld.com writes:
> 
> TK wrote
> 
>   
> 
>  ''When I started gum printing as there was no one to teach me how to make 
> gum prints, let alone the large multi-colour prints I had in mind, I had to 
> learn from a lot of my own mistakes. A scientific empirical approach.''
> 
>  .....................................................
> 
>  It would be enlightening and useful, also, to know how  Terry  first 
> learned about gum printing and also the first
> 
>   book(s) he read to gain a basic knowledge of materials and techniques.  Of 
> course, we all learn from our mistakes and I believe we should realize that 
> others may wish to do the same. The problem is that, theoretically, a 
> person may think that he has become so experienced and knowledgeable that no 
> mistakes are ever made and so the ability to learn ceases.
> 
> 
Received on Sat Apr  8 07:36:29 2006
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