Worsted, Woolen, or Semi-something by Rudy Amann
Do you spin worsted or woolen yarn? Don’t worry if you don’t know—many spinners do not know what type of yarn they spin. They just continue spinning the same way they did for their first successful skein of yarn.
The difference between worsted and woolen yarns comes from how the fibers are prepared for spinning, the drafting technique that is used, and how twist is allowed to enter the fibers. There is general agreement among spinners about how to spin true worsted yarns and true woolen yarns. However, most of us spin something between those two types of yarn.