[alt-photo] Re: platinum never a dull moment

[Clay Harmon Website]

I have gold toned both platinum and palladium prints using the formula that Dick Sullivan has on his website. It uses gold chloride and sodium formate, I think. The toning has to be stopped by immersion in an alkaline bath of old film or paper developer. 

I got some interesting results. As long as I had over 25% platinum, I got a nice coolish purple toned print. The Dmax increased as well. 

When I toned pure palladium prints, I got a very reddish, almost mahogany colored tone. I did not find the pure palladium prints to be very attractive. 

It was one of those toning sequences that demands close attention to the print. If you let it go too far, the toner would start staining the paper. Kinda of tricky, but interesting. I keep it my bag of tricks if for some reason I need a cool toned platinum print. But a gumover layer is easier to control, and can get you to the same place without the gold.



On Jun 9, 2010, at 9:45 PM, Christina Anderson wrote:

> Question for all you platinum printers:  do you ever tone platinum, and with what if you do?
> 
> Never a dull moment teaching pt/pd here at Penland--first, the Heico was NOT clearing the yellow out, so a trip to the canning section of the grocery store and health food store to stock up on citric acid, which did the trick nicely. It's not like there is a photographic supply house closeby.
> 
> Next, I never would have thought we would run out of developer as the first issue (thinking all along it would be the pt/pd precious metals!), but I dug up a trusty supply of vinegar and baking soda to make the sodium acetate in a pinch when the pot ox runs out. Anyone try this??
> 
> Otherwise, great bunch of students who have made over 150 gum, pt/pd, cyano, toned cyano, gum over cyano etc etc.
> chris
> christinaZanderson.com
> 
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