I own lots of seam rippers, but must tell you this event from yesterday......I stitched on a quilt binding and then realized it was on the fabric too much, so started picking out the seam, turned the quilt over to the back side to pull off the bobbin thread, I had wound my bobbin with 100% polyester Glide thread because it is so strong, and then to my surprise when I pulled on the bobbin thread, it popped off very easily and no more stitch picking for me on this quilt - just have to be certain to make a good secure knot on the end.