Seam finishes are used to keep the raw edges of seam allowances from raveling. They can also add a professional-looking touch to an item, producing neat, clean seam edges that can make an item look as nice on the inside as it does on the outside.
The type of finish you choose for your seams depends on:
The kind of fabric you’re working with
How neat you want your seams to look and whether they’ll be seen
How durable the finish needs to be
The amount of time you’re willing to spend on the task
The kind of sewing machine you have
And there's no need to finish seams:
If your working with a fabric doesn’t ravel, such as felt or fleece.
If your garment will be lined and the seams won't show (however, you may want to finish the seams if your fabric ravels easily).
Common seam finishes
Click on each for more information and instructions for how to make: