Please DON'T sew over pins, not only is it hard on the machine, it dulls and normally eventually breaks the needle and can be dangerous. If the pin gets hit just right it could break and cause it to fly right out of the material. I have had needles to break and fly all over, finding parts of the needle some time later. Please don't mess up your machine but sewing over pins. No matter what they say the machine can do. I always slow down and take my pins out when I get to them while sewing. Be careful!!!