
This Topstitching Article Will Change the Way You Finish Your Sewing Projects
, by Holly Hetzner, 10 min reading time

, by Holly Hetzner, 10 min reading time
Topstitching is an essential part of sewing and is incorporated into nearly every project in one way or another. It’s important to take the time to get to know each of the different styles and the function that each approach serves. Topstitching is usually for decorative purposes but can also be used as an essential stitch for construction and durability as well. If you’re just getting to know your way around a sewing machine give this segment a read to find out about the different ways and means for topstitching!
Topstitching is an essential part of sewing and is incorporated into nearly every project in one way or another. It’s important to take the time to get to know each of the different styles and the function that each approach serves. Topstitching is usually for decorative purposes but can also be used as an essential stitch for construction and durability as well. If you’re just getting to know your way around a sewing machine give this segment a read to find out about the different ways and means for topstitching!
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Topstitching can be used to smooth out wavy seams in necklines, provide extra strength to a seam, to attach something such as a pocket, or to simply provide a professional decorative finish.
This is done on all sorts of projects from sewing knit apparel all the way to upholstering a couch! Below is a list of some places that you might utilize one or more of the topstitching methods we will talk about here:
One of the most basic stitches used for topstitching is a single needle, straight stitch. This is typically used for tacking seams down, attaching pockets, turning and topstitching on things like cuffs or button tabs; but can also be used for hemming sleeves and garments (although that isn’t my favorite method).
When using a straight stitch for topstitching the stitch length needs to be long. A good length is usually about a 4 on the dial. For really thick fabrics you may go all the way up to a 5. It is especially important when topstitching something like a knit neckband or sleeve hems to use a really long stitch. This will allow the seam to retain some of its stretch capacity.
If a short stitch length is used here, you may not be able to get the garment over your head, your fabric may stretch out and you risk popping stitches while wearing your garment. One drawback to using a single needle topstitch is that it can cause bottom shirt hems to fold up on certain fabrics.
Single needle topstitching is also essential for pockets. This can be kangaroo pockets on sweatshirts, pockets on the back of jeans, welt pockets or simple slat front turn and topstitch pockets. Even if it isn’t my favorite for the majority of stitching that I do, a sewing machine single needle topstitch will ALWAYS be an essential tool to have in your bag. You will always need it.

[pictured: Two single needle straight stitches sewn side by side. Single needle required to pivot corners as shown]

A double needle is another way of using a basic sewing machine to create a more professional finish. Double needles leave a two-thread stitch on the right side and a zigzag on the wrong side of the fabric. Because of the zig-zagged bobbin thread on the wrong side, this stitch can leave even more stretch in your topstitch.
These can be purchased online and usually cost under $10. Affordability says these can be a great tool for beginners. However, there are some difficulties that you may encounter with a double needle. You may find it hard to find just the right tension setting on your machine resulting in the fabric tunneling between your stitch. A word of advice from me is to double up your fabric.
If your pattern calls for a single fold hem, be sure to modify it to be a double fold. If you are topstitching the neckline seam down, make sure not to let one of the needles stitch over a stand-alone layer of fabric. Stitch directly over the seam. More fabric equals less tunneling. Once you give it some practice, you’ll have it down in no time at all. Also, press your seams with an iron before stitching. This will help immensely and will result in a much cleaner finish.
How do they work? Double needles share one shaft. To use one you will insert the shaft into your machine the same way a single needle is installed. You will thread BOTH spools of thread through your machine together. I have heard several people swear by using stretch thread in their bobbin to prevent tunneling with a double needle. Some machines also have a double needle button/setting to press in order to get the best results. Read your manual for your specific machine set up and check out Jessica’s in-depth post on using twin needles to find out more.

This is by far my favorite machine to use for hemming and general topstitching. Most machines have the capability of 3 needles, although I have never actually used all three at once. A coverstitch machine will leave straight stitching on the right side with a chain stitch on the wrong side of the fabric.
The stitch that is made using a coverstitch allows for far more stretch capability than either top stitches used on a traditional sewing machine. This is ideal when you are topstitching or hemming sleeves, inseams and necklines on knit garments. This chain stitch on the wrong side of the fabric also leaves behind a nice finish along the raw edge of your fabric. However, there are limitations to using a coverstitch machine. The first being that you cannot pivot around corners if you have more than one needle in. It can also be a little finicky about the type of threads being used in the needles. Every machine is different but my Brother coverstitch really likes to use traditional sewing machine thread for the needles and serger thread for the looper.

[pictured: A 2 needle coverstitch used to secure a neckline facing in place. Note the finished edge on the inside with the interior chain stitch.]
-- Originally written by Kelly Bailey. Archived by Holly Hetzner.