3 Ways to Half Double Crochet Half Double Crochet (hdc). This is my favorite stitch and I really wanted to use it in different ways, so I thought I’d show you 3 ways to use it. I’m sure these stitches have actual names, but I don’t know what they are called. Haha! I love to make up things as I go along and this is one of those times. I hope that this will encourage you to find other new stitches and be creative. Crocheting doesn’t really have any rules, so feel free to experiment! Happy crocheting my sparkly friends!