Anyone here doing Gum Bichromate?

[david b]

I think the process is called gum bichromate.

Anyone on apug doing it? This process I mean?

 

[BrianShaw]

yes.

 

[donbga]

Yes.

Don Bryant

 

[david b]

Got examples?

 

[donbga]

Got examples?

What are you looking to find out David?

If you want examples visit Kerik Kouklis's site: Dead Link Removed or Clay Harmon's web site: http://clayharmon.net/
or Keith Gerlings website: http://www.gumphoto.com/

That should give you a good sampling.

Don

 

[donbga]

What are you looking to find out David?

If you want examples visit Kerik Kouklis's site: Dead Link Removed or Clay Harmon's web site: http://clayharmon.net/
or Keith Gerlings website: http://www.gumphoto.com/

That should give you a good sampling.

Don

Oh yeah try these two links, Ernestine Ruben http://www.ernestineruben.com/
and Keith Taylor: http://www.keithtaylorphoto.com/

Don

 

[smieglitz]

Got examples?

A few attachments below and some links to nude images I've done in gum:

4-color nude in woods gumby
nude in woods
Anima

Joe

 

[Shinnya]

Not yet, but about to... Just mixed gum solution, and it is sitting in my fridge...

tsuyoshi

 

[cjarvis]

In your fridge?

I have a couple tri-color gums in the gallery.

 

[Lukas Werth]

I sometimes print with gum, but my favorite process is casein bichromate - the same as gum, but using casein.
Here are examples of my work:
http://www.photographie.de/magazin/werth.cfm

 

[Shinnya]

Joe,

I really like one of the images in the middle. I am trying to make exposures like that for one of my projects. How was it done? Were you just printing darker or you controlled the exposure while taking pictures? Sorry for changing the topic by the way...

cjarvis,

Yes, my gum solution is still in fridge. Well, I was told to do so, at least while I am mixing it. I am about to mix some dichromate solutions and put gum over Pd prints once I figure out a problem in Pd printing (which is described in another thread)...

Warmly,
Tsuyoshi

 

[smieglitz]

Joe,

I really like one of the images in the middle. I am trying to make exposures like that for one of my projects. How was it done? Were you just printing darker or you controlled the exposure while taking pictures?

Tsuyoshi,

It is a bit of both. The negative was a Polaroid p/n film which was exposed for the Polaroid print so the negative was slightly underexposed. I deliberately printed it dark as well. Furthermore, it is a zone plate image which has diffused and lowered the contrast of the image.

This BTW is the most difficult scan I've ever done because the dark areas are subtly separated. I had to make it a .gif file instead of a .jpg in order to get it close to the actual appearence of the print. If viewed on a Windows machine I suspect the result looks much more contrasty and darker than the actual print.

Thanks.

Joe

 

[Poptart]

Hi. I've been doing gum for a couple of years.
Yes, it should be kept refrigerated--unless you're using that tar-like substance that's sold pre-mixed as printer's gum, which is loaded with preservatives. Gum acacia is an organic substance and spoils more quickly in heat. I add a tiny dose of preservative to mine when I mix it.
So tell us more about your ambitions and the materials you're using.

 

[donbga]

Yes, my gum solution is still in fridge. Well, I was told to do so, at least while I am mixing it. I am about to mix some dichromate solutions and put gum over Pd prints once I figure out a problem in Pd printing (which is described in another thread)...

Warmly,
Tsuyoshi

FWIW,

I never put my gum in the fridge. If you are mixing it yourself you can add about 5ml of 100% thymol per liter of your gum mix (what ever your gum mix ratio is; 1 to 2, or 1 to 3, etc.).

I just keep mine in a sealed container in my darkroom. It pours out with a slight tint but smells like a fresh band aid and works great!

Don Bryant

 

[Kate Mocak]

I do gum as well (Dead Link Removed)

An excellent description of the process is in the Issue #1 of The World Journal of Post-Factory Photography. You can download the issue from www.alternativephotography.com (run the search through the site to locate the file. It's quite big and takes a while to download.)

Kate

 

[Shinnya]

I am printing and finally feel like I have something to show. This is Gum over Pd from a 7x17 negative...

www.projectbasho.org/~tito/gumover/wlh_04.jpg

Warmly,
Tsuyoshi

 

[donbga]

I am printing and finally feel like I have something to show. This is Gum over Pd from a 7x17 negative...

www.projectbasho.org/~tito/gumover/wlh_04.jpg

Warmly,
Tsuyoshi

Can you tell us a little about your technique?

Don Bryant

 

[Shinnya]

Don,

Sure, I would be happy to. Let me know what you would like to know.

Warmly,
Tsuyoshi

Can you tell us a little about your technique?

Don Bryant

 

[donbga]

Don,

Sure, I would be happy to. Let me know what you would like to know.

Warmly,
Tsuyoshi

Just a general run down of your work flow. How you coat. What kind of pigments you use. Gum ratios, etc., etc.

Don