Last week, Bob Purcell of Superior Threads shared Part 1 of Cotton & Polyester threads. This week we have Part 2 where Bob talks about Glazed Cotton thread (thread which is waxed, coated, or starched). This thread is not good for your machine and will gum up your tensions disks. Bob gives a tip on how to discover if you are working with a Glazed Cotton thread. You'll also discover how this type of thread should be used.