•Overlock knob is an essential component of an overlock sewing machine.
•It is used to adjust and control the tension of the upper and lower loopers, which play a crucial role in creating secure and neat seams on fabric edges.
•By turning the overlock knob, operators can fine-tune the tension settings to accommodate different fabric types and thicknesses, ensuring optimal stitch quality.
•Proper tension adjustment is vital for preventing fabric puckering, unraveling, or producing loose stitches, especially when working with stretchy or delicate materials.
