I bought a GO cutter last year, and am sorry to say I have never used it! I bought it thinking I could use it to cut zillions of small octagons out of paper to use in English paper piecing for a grandmother's flower garden quilt (which I had already started), but the octagon pattern was too big. I think it would be wonderful for appliqué shapes, but appliqué is not my thing (except for iron-on and top-stitch), and it seems like you would just waste too much fabric using it to cut triangles and squares. Have any of you used one, and if so, how did you like it?