I was just at the Lancaster AQS show where I saw a woman demonstrate 3 remarkable sewing feet which fit on any machine which has a zig zag. They are called Creative Feet, and she designed them to help a blind woman sew--not the one who was recently on utube---these feet have been around for awhile, I think. I just never knew about them. They are made so you can easily feel if your fabric is in the guide correctly, then it sews perfectly by itself. Together the 3 feet can do about 80 different applications, she said. Really cool. Check it out.