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  #11  
Old 24-01-08, 02:55 PM
dbclemons dbclemons is offline
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Originally Posted by RobM View Post
...but when David starts talking of PVA and acrylic I begin to get slightly alarmed..........both of these to me are slightly taboo if one is to follow up any casein underpainting followed by et...
Although it is possible to combine casein and acrylics, it really isn't necessary, and I'm not actually recommending it. I mentioned it only because of the Elmer's glue comments. I have painted casein on washes of acrylic, however, and the adhesion is excellent, but the more acrylic content there is the poorer the adhesion.

As Dennis mentioned, one advantage to RSG is casein doesn't require heating to use, but it's best used at room temperature. In refrigeration it can last for several months. It's rather easy to make from milk or cheese, but the fresher (non-homogenized, un-fortified) it is the better. Pigment supply places like Sinopia or Natural Pigments carry it in dry powder form which makes it even easier to mix up.
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Old 24-01-08, 03:36 PM
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RobM RobM is offline
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Thanks David........makes it clearer. Guess I will have to try it sometime.
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  #13  
Old 25-01-08, 07:39 PM
Sukey Sukey is offline
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Pigment supply places like Sinopia or Natural Pigments carry it in dry powder form which makes it even easier to mix up.
I've ordered some of Natural Pigment's "ultra casein," and I'll let you know how it goes. I don't know what makes this stuff "ultra" but the email I got from the company says it blends easier with less soaking time, and needs less borax in paint compounds.

Sukey
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  #14  
Old 26-01-08, 03:59 PM
dbclemons dbclemons is offline
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Good, Sukey. I'd like to hear about your results. I suspect the "ultra" is maybe just a extra fine powder.

Since I mentioned acrylics, I should also state that casein is a water & oil emulsifier also. I've not tested that with ET personally, but have made oil grounds this way for oil paintings.
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