Quilting machine's broken line is a rotating shuttle. Do you want to polish it?

There are many reasons for disconnection, not necessarily the shuttle. For example, the thread passing link from the thread group to the needle has burrs or rough surface, and the upper thread will be broken due to damage. The needle hole of the needle plate deviates from the center of the needle or there are burrs at both ends of the hole, and there are burrs at the bottom of the presser foot hole, which will break the line. Jiangsu Dingnuo will answer your questions. Please pay attention to official website for more information.