Last year's "caulk on canvas" assignment was such a success that we did it again, except we used latex and acrylic instead of liquid water color, and we created more textures with the wet caulk, rather than just lines.
It worked best a few minutes after dried a little on the canvas so it wasn't too sticky and then use back of spoons can create peaks, and combs create waves and lines. Strips of cardboard can push and swirl areas to give it enough tooth that a top coat of paint will stand out from an underpainting.
Mosts of the canvases were covered with spray paint for an even underpainting.The contrasting paint on the top layer gave it a richness that didn't exist when students just added paint to the plain white ground.
The lines of caulk helped students who are blind feel the edges of shapes, when they were painting. And tactile paintings are always good to have on display at schools for the blind so they can be enjoyed by everyone.
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