It occurred to me (duh!) that I should test the ground I'm applying to the cut mats since I've never used this mixture before. I used 1 cup acrylic gesso + 5 Tablespoons marble dust + 1/4 cup water. Put it in the blender, spread it with a foam roller. I'm glad I tested it on this 8 x 10 masonite panel because it is too gritty for me. I'll adjust the recipe and mix another batch to test. Click on the image to enlarge.