Overlockers & Overlock Machines

An overlocker trims the raw edge of the fabric, sews the seam and wraps the edge with thread in a single pass for a neat, professional finish that resists fraying. It works alongside a standard sewing machine rather than replacing it and is especially useful for stretch fabrics and garment seams. If you sew clothing regularly, an overlocker gives your makes a ready-to-wear finish.

For more experienced and ambitious sewers, yes. A sewing machine handles construction, buttonholes, zips and topstitching, while an overlocker specialises in neat seams and edge finishing. The two work together rather than one replacing the other. If you are unsure whether you need both, our overlocker buyers guide explains how they complement each other.

They perform different finishing jobs and many more experienced dressmakers own both. An overlocker trims and neatens raw edges and sews stretch seams, while a coverstitch machine creates a super strong but flexible seam on stretch fabrics like knits and lycra. Some combination machines do both, though they need reconfiguring to switch functions. Our overlocker buyers guide and coverstitch buyers guide set out which setup suits your sewing.

Overlockers use more threads than a sewing machine, typically three or four, so threading takes a little more time. Many modern models make this easier with colour-coded threading guides, and some brands offer air-assisted threading that removes much of the effort. Once you have threaded a few times it becomes routine and our team can talk you through the system on any model.

Yes, overlockers are suitable for beginner sewers particularly once you are comfortable with a sewing machine. There is a short learning curve around threading and tension. They suit sewers who want a professional finish on garments and stretch fabrics. If you are completely new to sewing, it is usually best to start with a beginner sewing machine and add an overlocker as your projects grow.

An overlocker is ideal for dressmaking, t-shirts, activewear and any project using jersey or stretch fabric, where the seams need to flex without popping. It also neatens the inside of woven garments and home furnishings for a tidy, hard-wearing finish. Paired with a sewing machine, it covers most garment-making needs.

Capable overlockers start from just over £200, with more advanced models offering easier threading, extra stitch options and greater fabric versatility as the price rises. The right choice depends on how often you sew stretch fabrics and how much you value features such as air threading. To spread the cost, we offer interest-free finance on eligible machines.

When starting out, look for an overlocker with lay-in tension dials, as they are easier to thread and keep the tension consistent. A lower looper threader is a handy feature that makes threading easier still. Avoid going too basic, as the simplest machines may not have the power for thicker fabrics. Think about what you want to make and look for features that help, such as a free arm for sleeves and cuffs. Our guide on how to choose your first overlocker explains each feature in more detail.

Some sewing machines offer an overlock stitch, which usually combines a straight stitch with a zigzag. While it can resemble an overlocked stitch when done properly, it isn’t as durable as true overlocking.

The three features that make the biggest difference are:

• Number of threads: decides how many stitch options you have.
• Threading system: lay-in tension dials and a lower looper threader make manual machines easier to set up, while air threading is the easiest of all.
• Differential feed: stops stretch fabrics waving and fine fabrics puckering.

For the full checklist, see what to look for in an overlocker.