I have the 1/4 foot with guide for all my machines. I have one for my Featherweight too. It helps to keep the seam straight but I don't rely on it. I use Command Strips to make the edge all across the sewing area. I also have the seam guide that suctions on the sewing extension table. When I was learning to sew an accurate and consistent 1/4 seam I used 1/4" Wonder Tape. It washes out and won't stick to the needle.