Using a coverstitch machine is the best way to get professional-looking hems on knit garments – if you look at any knit garment from a store, chances are that it’s coverstitched! However, while coverstitch machines are fantastic, it’s not uncommon to end up with a wavy hem, or stitching that doesn’t exactly catch the back of the fabric. So here is my perfect coverstitch tutorial! Over time and with practice you may be able to skip some of these steps, but they’re a good place to start.
6. Place the garment right side up on your coverstitch machine, and sew from the right side. Start on a piece of scrap fabric, and then “run on” to the hem (you can cut the scrap fabric off later).You should be stitching directly on top of the serged edge on the other side – you should be able to feel it with your fingers as you feed the fabric through the machine. Optionally, you can first hand baste through the serged edge to give you a guide to follow when you’re on the right side, but I find that feeling the serging underneath works well.