In this video, we learn how to build a canvas frame stretcher. First, you will need to choose lumber that is the size you want your stretcher to be. After you do this, use a hammer and nails to connect all of the pieces of wood together so you have a square shape. You will need to hammer in a lot of nails so the frame stays in place. Use a saw if you need to cut any points down or make it smaller than you have it. When you are done, screw any additional nails into the frame and make sure everything is leveled, then you are finished!