|When working with leather, I use binder clips to hold leather pieces together while sewing. Since you can't pin the leather, these hold them securely in place. As the presser foot approaches the clip, I slide the clip backward, keeping the leather pieces from shifting around. I have several sizes, but I like to use the 3/4" size the best for most seam allowances. They are less expensive than leather clips, and you don't need to find a specialty retailer. You can buy binder clips inexpensively at any stationary store.