Its's pretty common to have thread get caught up behind the Bobbin Assembly in you Singer Featherweight. Rolling the handwheel in reverse or away from you will lead to a thread jam. The right tool makes any job easier. These Straight 5.5" Serrated Hemostats are the right tool to remove unwanted thread and lint from your machine. It's a maintenance or service must have much like our custom cultivated Screwdrivers Sets.