Re: can't get green tone in gum--help please
Okay, without further information I'm going to go ahead and speculate that the tablecloth is blue, and if so, I'll diagnose this tentatively as a problem of balance: too much blue and/or too little yellow. I'd agree with Keith that you can't really be sure until you've got all the colors down, because colors will fool you, but still, if the overall cast of your print after laying down the blue and yellow is cyan rather than green, I think it's more than likely that your yellow is being drowned out by the blue. This is more likely to happen with pthalo, but I suppose it could happen with any blue including ultramarine. And I disagree with Marek about the ultramarine; I get beautiful greens with ultramarine, and don't much care for the greens made with pthalo, but of course that depends on what your other colors are too. A knowledge of the color wheel helps me know if my colors are properly balanced while I'm printing; after two layers the overall color cast should be the complement of the third (last) color. I print in an opposite order than you: yellow, red, blue, so I'm more familiar with the orange/blue complement pairs than with the green/ red complements. When I was printing in PY110, PR 175, and ultramarine, my print was always a certain orange after the first two layers, that represented the complement of the ultramarine, ensuring neutrals where neutrals needed to be in the final print. You haven't indicated what your magenta pigment is, which makes it difficult to say which green cast your print should have after the first two layers, but green it should be. If your magenta is a blue-ish rose like quinacridone rose (PV19 gamma) then the green should lean toward the yellow side (but not too far) if a redder or yellower red, then it should lean toward the blue side. Hope any of that is helpful, Katharine On Mar 10, 2009, at 11:25 AM, Katharine Thayer wrote: Charles, if the tablecloth isn't green, what color is it? On Mar 10, 2009, at 9:47 AM, Charles Ryberg wrote:Folks, I've made one nice tri-color gum (many months ago)
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