Hi!
Would it be good practice to apply a layer of titatnium white mixed with an alkyd or cobalt dryer, on top of an acrylic polymer (“gesso”), when priming an ACM panel?
I’m a painter from Brazil and fine art supplies are hard to come by here. Ideally, I like to paint on oil-primed linen mounted on ACM panels, but linen, when you can find it here, is ridicoulosly over priced. Think like 4 times what you would pay in Europe or US.
So I’m priming my ACM panels with an acylic polymer (“acrylic gesso”). I sand it lightly and then apply up to 5 coats with a brush roller.
It is a fine surface to use, but I find that is too absorvent and the oils sink in way too much. The paint doen’s flow as well and the darker colors become way too light the next day, making it impossible to judge it’s values.
So a fellow painter reccomended the titatnium white with a dryer.
Would that be ok? What should be the ratio of paint to dryer?
Thank you!
I see, good to know.
How thick or thin should that layer of titanium be?
And how long should I wait before painting on top of the titanium white? Assuming that I’m using paint straight out of the tube.
Sometimes I’ll make the under painting thining my paints with a small ammount of OMS, but I’d imagine that wouldn’t be a good practice in this case.
thank you very much!
Great! Thank you!
It should be fine to apply a titanium white oil layer over your priming. I would be careful about adding additional cobalt drier, though. Unless you are making your own titanium white oil paint or are purchasing one of the very few brands that who do not add drier to their oil paint during the manufacturing process (if they do not explicitly state that their paint is free from driers, assume that they added one), you are adding additional drier to paint that already contains drier. A superabundance of any drier will contribute to a prematurely brittle/damaged paint film.
I would make the oil priming thin. If you want a thicker layer do so by applying multiple coats. As this is a panel it can be difficult to apply a layer without pronounced brushstrokes if it is not thin. On fabric I use a larger spatula to apply an oil priming, this is less successful on panel. Let the oil dry at least until you can press a fingernail into it without making a mark. Longer is better.
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