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Painting Update 2: Coffee at the Window

January 17, 2018

I’ve been preoccupied lately with a family matter, and will remain so for awhile, so progress on this will be slow, but I’ll try to squeeze in time as I can. Not a too much new on this update to show, just the tiles on the back wall have been added.

One thing I wanted to mention about working in casein that I can use this as and example regards later varnishing procedures. After a various length of time, casein paint will cure to a point that it can be varnished by first adding a protection isolation coat. For that I use an acrylic medium from Liquitex called Gloss Medium and Varnish. Before I apply that, I like to test the casein paint surface to make sure the acrylic medium won’t disturb the paint. In this painting there are scrap areas above and below on the paper surface that will be trimmed off. I can use the paint on that area to test the acrylic. If such a space isn’t available, I can just paint a separate scrap piece of paper when I finish the painting, or paint on the back. That way the paint sample will cure for the same amount of time. If the casein is not disturbed I can safely apply the acrylic isolation coat, and once that dries I can continue to apply two coats of an acrylic-safe varnish. I find that 3 to 4 months is the average amount of time to wait for casein to properly cure, but it may take less time depending on the thickness of the paint.

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