Originally Posted by
d.rickman
I think you cut out a square the size that is required - stitch around all the four outside edges 1/4 inch,
then cut an "X" across from corner to corner and then you have all four triangles that you need for your
quilting project, be sure to use "Best press" or another starch, so you don't get any stretch on the bias
seams.
This ruler uses a different method. You cut squares, then use the X ruler to mark the sewing lines. You sew the X; you do not cut the X. Assuming the squares are cut normally, the method you describe leaves bias edges; the method using the ruler leaves edges on the straight-of-grain. That is a decided advantage for the ruler.