Machines & tools

A looped stitch formed by a single needle thread interlocking with a looper thread in a chain-like pattern beneath the fabric, used alone or alongside cover stitching.

A serger or coverstitch feature using two independently adjustable feed dogs, front and back, to stretch or gather fabric as it feeds, preventing waves or puckering.

A serger stitch sewn with loose tension so the seam pulls flat and open, leaving a ladder of thread on one side, often used decoratively on knits.

An overlock stitch using two needle threads and two looper threads to form a durable seam that both sews and finishes an edge in one pass.