This oil study is done on 1/8" gessoed untempered masonite. My brother-in-law buys 8' x 10' sheets and cuts them to order for me. I then sand the edges and lightly sand the painting surface before giving it two coats of gesso, allowing 24 hours to dry between coats. I thin the gesso with water so it is fairly thin....slightly than milk. I use a small foam roller to apply the gesso to the board. Once the board has two coats of gesso and is completely dry, it is ready to use. I don't sand the gessoed board before painting.
159 - Black-headed Grosbeak
5" x 7" oil study on board, unframed
$75 plus $6 shipping within the U.S.
This shows how I make my own gessoed boards.