This mechanism, a small but crucial component found on all sewing machines, regulates the thread delivery from both the spool and the bobbin. It ensures the threads intertwine correctly, forming a balanced stitch. Without proper regulation, the stitching can be too loose, causing seams to unravel, or too tight, leading to puckered fabric or even thread breakage.
Accurate thread control is fundamental to successful sewing. It allows for consistent stitch quality across various fabric weights and types. A well-maintained and properly adjusted system prevents common sewing problems and contributes to the longevity of both the machine and the sewn items. Historically, tension systems evolved from basic manual adjustments to more complex and automated systems, reflecting the ongoing advancements in sewing technology.
