Tutorial: Single Crochet (sc)June 2016 // by knotions// Leave a CommentSingle crochet (sc) is a firm stitch that’s used in a lot of designs. Learn how to make it. Insert hook. Yo and pull through both lps. One single crochet (sc) made. Yarn over (yo) from back to front and pull a lp through. 2 lps on hook.