U of S | Mailing List Archive | alt-photo-process-l | Re: gum mixes

Re: gum mixes

Dear Christina,

I use a premixed gum solution. This is combined with either linel or old
holland paints to make stock solutions which are combined with either pot or
amm dichromate - usually 1:1, but sometimes 1:2

BTW thanks for your work in raising and encouraging these discussions - its
always interesting to see how different gum printers work.



On 23/12/07 18:18, "Christina Z. Anderson" <zphoto@montana.net> wrote:

> Dear all,
> I'm finishing my section on gum thicknesses, and was wondering a question or
> two of all one-time to inveterate gum printers:
> 1.  How many of you are using premixed gum?
> 2.  If  not and you are mixing your own, what dilution are you mixing it at
> exactly--weight of gum into what volume of water, for instance? If it is
> 300g in a TOTAL volume of 1 liter, or 300g PLUS one liter please
> differentiate clearly. If, mixing more than one solution, also state.  If
> not using gum/pigment 1:1 sensitizer at time of use please note.
> Any other practices, I'd love to hear--e.g. using a hydrometer or some such
> thing. Or if you use dry gum at time of use in your sensitized mix and do
> not premix a gum solution.  Stuff like that.  I've got the timeline almost
> finished on gum dilutions from beginning til now and I want the "now" as in
> 2007.  Hopefully this isn't too pointless, misleading, and confusing!
> Chris
> __________________
> Christina Z. Anderson
> Assistant Professor
> Photo Option Coordinator
> Montana State University
> Box 173350
> Bozeman, MT  59717
> 406.994.6219
> CZAphotography.com