In the time it would take me to use the binding thingy to miter the binding on the corners I can miter them without the binding thingy and be going on to the next corner. The corners are not that hard to miter but when I am getting to the end of the binding in the middle of one side or end of the quilt that is when I really find the binding thingy handy! Have only done a couple of quilts since I got that tool so it still takes me a little time to figure it out but it sure does a good job finishing the binding on the quilt!!!