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Unlike standard lockstitching, which uses a bobbin, overlock sewing machines utilize loopers to create thread loops for the needle to pass through, in a manner similar to crocheting. Merrow's original three-thread overedge sewing machine is the forerunner of contemporary overlocking machines.
In this video lesson you will learn how to thread and use serger (overlock) sewing machines. Become familiar with these machines and feel confident using them.You will be able to apply your knowledge to many different brands as well, since most sergers function similarly.ou will learn about different sergers, including how to thread these types of machines, adjust the thread tension, differential and stitch length settings to get the best results every time and a shortcut for changing the threads on your machine fast and easily between different projects.