Following up on my previous post where I made a small tile out of Activa Supreme clay to use as a painting surface, I wanted to see how well paint would adhere to it. Before I get into that, I wanted to test out a couple things that I had read about it, and got some poor results, unfortunately. Information from the manufacturer said that the dried clay could be fired in a kiln. I don’t have one, but I figured an oven would work to at least help dry it out better. After only a few minutes in a hot oven the sample piece I made started to crack and blister. You can see the round explosions of moisture that erupted in the tile sample n the photo above. Maybe I should’ve let it air-dry longer, or used a lower heat (< 500.) The good news here is I don’t really have to fire or heat the tile to accomplish what I want with this material, but I did want to test this out. Another aspect I read was from watching a video demonstration of a sample piece of this being dropped onto a hard floor and not breaking. I tried the same thing on my wood floor, and you can see that it broke into several pieces. Not too surprising since I would expect the same thing from any piece of ceramic. As a result, I would recommend mounting the dry tile to a firm support like a wood panel, which I planned to do anyway. Glad I did all this on a sample piece.
Undeterred from these tests, I still wanted to see how well paint would adhere to the pieces that were left of my damaged sample. I painted a few swatches of color onto them using some homemade and commercial brands of gouache and casein paint. The paint went onto the tile very well. No beading up at all. The slight grey tone of the tile does cause the thinner layers of paint to have a more neutral appearance, but you could prime the surface with white first to brighten it up. Casein would work as a primer for gouache if you used a thin coat, and let it dry for a week or two. You can see a swatch of white on the large piece above. Acrylics had no difficulty on this. For oils, I would want to size the surface first with acrylic medium or shellac so that the paint wouldn’t sink in too much.
I’m pleased so far with how this is working, so next I’ll mount the small tile I made to a wood panel, and do a small painting on it. There’s one other test of an idea I have to see how I can make this material go further in an even thinner application, and I’ll show that in my next post.