Re: Gum hardening: top down? losing patience

>
>
>Sandy has already expressed a view as to a lack of understanding as
>to how the gum process works although he withdrew his comment in
>relation to individuals. but his comment stands that matters are
>more complicated than you had assumed.
>
>I could go on but, given the first assumption, i do not wish to
>waste everybody's time
>
>i sympathise with your frustration and loss of patience.
>
Terry

Terry,

Actually the only comment I withdrew was that the test I proposed
would be simple. It would be simple enough if the only issue were to
prove that colloids harden the surface down, but where the goal is to
actually make prints the matter is quite a bit more complicated as
one must balance several different things, including thickness of
coating, concentration of pigment, and strength of the sensitizer.
And also, printing contrast of the negative. As you know, each one
of these variable is very important for making good carbon tissue,
which is similar at this point to what Katharine wants to do.

Sandy
Received on Tue Apr 11 06:34:55 2006