Re: gum mixes

[Joseph Smigiel <jsmigiel@net-link.net>]

premixed 14 Baume gum
1:1
saturated potassium dichromate
usually Daniel Smith watercolor tubes but sometimes from powdered  
pigments
I sometimes use interference pigments or glittery mica stuff in the mix
digital negs from inkjet printers

Joe


On Dec 23, 2007, at 1:18 PM, Christina Z. Anderson 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