I DO NOT sew over pins as I did one time many years ago and the needle broke, flew up and hit my glasses. Thank goodness for glasses. I do have a friend that use to sew over pins all the time until she bent the needle shaft on her Bernina and it costed her mega bucks to have it repaired. I try not to use many pins, but if I do, I remove them before they get under the needle. Just sayin'....