What is it?– Every Tool School is packed with valuable, useful information.  But if you use a sewing machine at any point in your creative process, this one may be one of the most important.  So pay attention because there may be a test at the end of class.  If I were to ask you what you thought was the most important physical element of your sewing machine what would your answer be?  The sewing machine itself? How about a quality thread?  Perhaps even the needle?  Well, they all work…