The Binding Tool from TQM is a must-have for every quilter. It's designed to eliminate the bumps and lumps that are so common when joining the ends of your binding.
Available in two sizes, original for 2½" strips and mini for 2" strips.
Use this acrylic tool to make two measurements and two cuts and you're on your way to a perfect, smooth finish.
Instructions are printed on the tool. Plus one quilt shop has put together a wonderful video that steps through the process which you can see below.