Have you ever seen a painting on a piece of smooth, hard board instead of a canvas? That board is called masonite.
Masonite is a special kind of board that is made by pressing together wood fibers with a special kind of glue. The glue makes the board really strong, hard, and smooth. Artists like to paint on it because it's a great surface to work on - the paint goes on smoothly and the surface doesn't warp or bend like canvas can.
To make a painting on masonite, the artist first prepares the surface by sanding it down and priming it with a special kind of white paint. This helps the artist's colors show up brighter and stick better to the board.
Then the artist gets to painting! They use brushes and paint to create their picture right on the smooth masonite surface. Once the painting is finished, the artist may add a special kind of clear coat to protect the painting from damage.
So that's how paintings are made on masonite! It's a hard, smooth surface that artists can use to create beautiful artwork.