Most sewists advise using the straight stitch when sewing a patch. The straight stitch will give the strongest hold, especially when you set the stitch length to 2mm or less. The straight stitch is also the simplest stitch pattern you can use, whether by sewing by hand or using a machine. It is a basic stitch that does not require much effort to do. To ensure that you have secured the patch, backstitch at the start and at the end of sewing your patch. The zigzag stitch is the next most common stitch used to sew a patch. You can use any stitch pattern to sew your patch as long as it serves the purpose of attaching the patch. Use the narrowest setting you can find in your machine, as patches usually come in small shapes and sizes. Also, avoid covering the design meant to be showcased by the patch.