I have the Simplicity bias machine. I really use it. I only use the 2 1/2" strip tip for the straight binding. At first I thought it wasn't worth using and I'm so glad I didn't give up. It's great. When you sew the strips together to get one long wide strip have the seams turned to the right when going into the tip. That stops all snags and the strip will pull through evenly. For the narrow bindings I press the seams open. Little things like that I learned by trial and error. I have lots of pre made binding made from scrap strips and from lengths of yardage. I make a lot to sell at our guild table and it sells fast.