Sergers

Using a Serger to Sew: What It Replaces and What It Doesn't

New serger owners often ask a fair question. How much of a project can you build using a serger to sew alone, before you switch back to a sewing machine? The honest answer depends a lot on the project.

Using a serger to sew: what it can build on its own

Simple knit clothes with no closures can be built almost wholly on a serger. Think of a basic t-shirt, leggings or a knit skirt with an elastic waist. The serger can do the shoulder seams, side seams and sleeves.

Hems need a coverstitch or a twin-needle finish on a sewing machine. Some sewists make a whole simple knit top from cutting to hem without touching a sewing machine. The only exception is the hem, if they don't own a coverstitch machine.

What using a serger to sew still can't replace

• Zippers. A serger can't insert a zipper; this is exclusively a sewing-machine task.
• Buttonholes. This is entirely a sewing-machine function, requiring the precise, controlled stitching a serger's design doesn't offer.
• Topstitching and decorative stitching. A serger's stitch is built for edges and seams, not visible surface stitching.
• Elastic casings and waistbands on some patterns, depending on the construction method specified.
• Gathering on patterns that call for it, though some sergers have a gathering-foot attachment that partially covers this use case.

A realistic project plan

For a first serger project, pick something that really suits a serger. A basic knit top or a simple elastic-waist skirt or trousers works well. Both have no zipper or buttonhole.

Save projects with zips and buttons until you are at ease moving fabric between both machines. That back-and-forth is the normal way most clothes get made. A simple, low-stakes project also means a threading or tension mistake costs less time and fabric while you learn the machine.

Reinforcing high-stress seams

Even on a knit garment that suits a serger, some seams need more strength than the serger's stitch gives alone. Examples are the crotch seam on leggings, the underarm seam on a fitted top and any seam that stretches a lot in normal wear. A common fix is to sew these seams with a straight or stretch stitch on the sewing machine first. Then serge over the seam allowance just to trim and finish the edge. Don't rely on the serged seam alone where the strain is high.

Moving fabric between machines efficiently

When you use both machines on one project, a little planning saves real time. Group all the sewing machine steps together, and all the serger steps together. Don't switch machines at every step as you work down the list. That cuts down on rethreading, changing settings and walking between machines. Those small delays add up over a whole garment.

Planning a project's machine sequence in advance

Before you cut fabric, read the pattern's full list of steps. Mark which ones need a sewing machine and which need a serger. That lets you group steps by machine. You won't find out halfway through that you have to switch more than you expected. For a simple knit top, the order might look like this.

Serge the shoulder seams. Serge the side seams. Attach the neckband on the sewing machine, if the pattern needs more precision there. Then serge or coverstitch the hem. Mapping this out first keeps you moving and lowers the chance of a mistake from working out of order.

Fabric and thread waste to expect

A serger trims fabric as it stitches. So projects sewn mostly on a serger use slightly more seam allowance than sewing machine work. They also make more thread and fabric scraps. This is normal and not a sign of a mistake.

Most patterns already allow for it in their seam allowances. Keep a small bag or tray under the machine to catch the trimmings. That stops scraps from spreading across your work space.

Working with patterns not written for a serger

Many beginner patterns assume you only have a sewing machine. They say "zigzag to finish," not "serge to finish." These patterns still work well with a serger. You don't need a pattern written for a serger to use one.

Wherever the pattern asks for a seam plus a separate finish, use a serged seam instead. Use the sewing machine for anything structural, like zippers or buttonholes, just as the pattern says. A pattern with no serger steps is still fine for a serger.

Related reading

Serger vs. Sewing Machine covers how the two machines split the work in more detail. Sewing With an Overlocker walks through a real project seam by seam, from start to finish.