Types of Sergers

Sergers are special sewing machines that allow you to sew a seam, trim the seam allowance and finish the edges all in one step. They may look complicated, with their several spools of thread and small, sharp parts, but they can speed up the sewing process for an intermediate seamstress who is familiar with the basics of her regular sewing machine.

Uses

Also known as overlock machines, sergers are most often associated with sewing knit fabrics. This is because their stitches have built-in stretch, which prevents seams from popping when pulled. Sergers can also be used to finish the inside of a garment, securing the seam allowances so that they don't ravel. This gives them a professional finish, as sergers are often used in the manufacture of retail clothing.

Cost

Sergers are made by several manufacturers, ranging from entry-level machines to heavy-duty commercial types. Generally, the more threads a serger has, the more expensive it is. A basic machine will cost about $150 to $300, while professional models easily go over the $1,000 mark.

2-Thread Sergers

Two-thread sergers produce a flat, narrow stitch, and are best for lightweight or sheer fabrics.

3- and 4-Thread Sergers

Three-thread sergers have one needle, and are best on medium to heavy fabrics. They can also be used for decorative effects, such as pin tucks and rolled hems. Four-thread sergers are similar, but have an extra needle to create wider, more secure stitches.

5-Thread Sergers

Five-thread sergers, which also have two needles, are a combination of two- and three-thread sergers, and create a safety stitch, which produces a very durable seam.