Do you really need an overlocker?
Long answer: No, you don’t need an overlocker, but it gives a more professional finish to many clothes. If you make clothes that you plan to sell, then I would say it is essential! An overlocker creates a stitch that trims and wraps the raw edges of your project and can sew a seam at the seam time.
Should you overlock before or after sewing?
You can use the overlocker to finish the seams together after constructing your garment but before doing any topstitching. You’ll want to try on the garment and make sure the fit is spot on before finishing the seams in this way.
Can you overlock by hand?
An overlock stitch can be done by hand or machine. You can choose this type of stitch on a sewing machine and you’re ready to go.