I received a request for a figure painting on paper and decided to experiment with the base for my new acrylic painting. At first I used watercolor paper bonded to the cardboard with the Heavy Gel medium. The base bowed after drying and didn’t flatten even after two days under the press. I couldn’t use it for painting.
Then I found a great tip on using staple during the priming paper for acrylic painting!
After reading this article I started preparing a new piece of paper: stapled it to the board and primed with gesso twice. After this treatment paper was remaining perfectly flat and let me carry on with the painting. Several layers of acrylics applied heavily for the textured background didn’t bow the paper! Finished painting I glued to the cardboard (using Matte gel medium) and sealed with acrylic varnish. It looks perfectly flat and sturdy and can be framed even without matting. I like this method.