It is slightly finer in size, and has a special finish for higher speed sewing. It is available on cones, king or compact tubes. There are a variety of threads you can use for serging. Your fabric will influence the type of thread you select as well as its fiber content. Fiber content of your thread need not be the same as your fabric.
Heavyweight fabric requires a heavyweight thread and lightweight fabric requires a finer thread.
Very light weight or sheer fabrics are best sewn with a very fine needle and an extra fine thread. Using the correct thread size may reduce puckering, a problem frequently encountered when sewing light weight fabrics. Thread Care Consider the care requirement of your thread choice. The thread care requirements should be compatible with the fabric care requirements. Thread Tips Select a thread color to match your fabric or one shade darker.