I got a pair of the squeeze sissors with the slightly curved blades from Nancy's Notions. They are for machine embroidery but found by accident they are great for seam ripping. It works best to lay your piece flat on a hard surface like sewing cabinet or table. Hold the sissors in your hand side ways and slip one of the fine points under a stitch and squeeze and snip do every three stitch unless I have put the stitch count way up for the beginning or ending of a seam. When you have snipped the top stitches turn it over and slip point under bottom thread and pull and it will all come out. Then use blue painters tape to take out the remaining little pieces of thread. I love those sissors as I have some problem with my hand joints and all I have to do is pick them up and squeeze and not take time to get my fingers in the holes in the handles. My very favorite sewing gadget and I guard them, DH knows not to touch them. LOL When doing hand sewing I put them on my neck strap so I don't have to keep reaching for them. I bought a cheaper pair once but the tips were not the same curve and points were to sharp to use this way.