U of S | Mailing List Archive | alt-photo-process-l | RE: Gum over Platinum print

RE: Gum over Platinum print

Hi Matthew,


Thanks for sharing! Nice work, do you start out with a “full” pt/pd print (ie a print which is “finished” ) or a little light?

Do you use the same negative for the gum print?


I guess that my print is better labeled platinum and gum, since I first print a high contrast image with platinum (missing most of the mid tones and no high values), and than with a low density negative fill in mid and high with gum.


I did do some gum over platinum and I agree it is a realy nice way to enhance an image.


Last night I made another gum and platinum print last night, this time I mixed some yellow in with the burnt sienna and took a deeper black Pt print.


If I have time I will upload that image tonight






From: matt magruder [mailto:me@scootermagruder.com]
Sent: maandag 29 september 2008 22:01
To: alt-photo-process-l@usask.ca
Subject: Re: Gum over Platinum print



I've been doing gum over platinum/palladium prints for a good long while now (relatively speaking of course). Clay Harmon graciously spent a weekend giving me a crash course in it and I've been stumbling my way through it for the last few years. 

Its a wonderfully addictive process, as I've heard many practitioners state, gum layers atop a pt/pd print can do nothing but improve a print. :)

I usually print either 2 or 3 layers of gum. Have found fabriano artistico extra white to be the mainstay paper, prebath in oxalic acid, sized with formalin after the pt/pd print is done. Using winsor&newton wc pigments. Good combo for my working methods. 

Enjoyed hearing about your process etc. 

Hope to see more of your gum overs.  


One of my gum overs...

3 layers 

1- indian yellow and burnt umber

2- burnt sienna, perylene maroon, and burnt umber

3- black (short exposure helps punch the shadows a bit. 




Matthew Magruder


512 565 6691


Texas Church Project



On Sep 29, 2008, at 11:55 AM, C.Breukel@lumc.nl wrote:

Since the list is in a image sharing mode (which is great, I love to see the work of others!) I would like to share a first result (it is still work in progress) of my regretfully infrequent alt printing adventures:

You can find it at: http://home.casema.nl/cordieuwke/GumOverPlatinum.html

The details, for those interested:

I started out with a Kodak Infrared negative (35mm). It was made during our trip in May to Turkey. This one is from the wonderfull area of Cappadocia, near the town Neveshir (Judy: the girl running towards me on the image is my daughter, one of the twins..).

I made enlarged negatives from it by revearsal a la Liam Lawless (I still work completely analogue..perhaps I am as we say in dutch "De laatste der Mohikanen"..leave the translation to you..;-).... I made several negatives with different Dmax densities by altering the flash time.

My idea was to print a high contrast image with platinum, and than fill in with gum to lower the contrast and to add colour (with a low contrast negative).

The paper I used is Canson Fonteney, smooth side, pre-shrunk but not sized (I hate sizing, and I know that this paper can take a few gum layers without staining).

Only one gum coat is there: a weak Burnt Sienna.

And know I have to think what next, keep it as such, or add some other colour (I am primairly a B&W person, scored a meager 37 on the colour IQ test..;-)..)

Still have a few high contrast PT  prints that need filling in, I am thinking about yellow..