A short time ago, I posted some pictures of a jig I was building as a visual aid to help teach students in my book binding classes coptic sewing. I’ve finished the contraption up and I’ve dubbed it the High Speed Sewing Simulator. There’s really no compelling reason to talk about the jig itself so instead, I’ve completed a video tutorial on sewing the Locking Coptic Stitch. The Locking Coptic Stitch is an exposed spine sewing and it’s a variation on the traditional Coptic Stitch. I sew it this way simply because I feel it adds a little more structural integrity to the sewing. Enjoy.