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Question asked 2020-10-23 10:04:09 ...
Most recent comment 2020-10-23 10:55:16
Oil Paint
Rigid Supports
Grounds / Priming
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!
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Moderator Answer
(brian baade)
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.
EditDelete
Moderator Answer
(brian baade)
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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