I watched this video twice before I knew I had to have this ruler. I’ve always been dissatisfied with the method of drawing the diagonal line and then sewing, trimming , pressing to make hst/ flying geese /binding, etc. Sometimes the unit turns our ok ; often it doesn’t but what step in the process was the culprit when it doesn’t?
I bought the ruler recently and used it for binding and hsts so far. I love it. One caution is that there is a bias edge so starching the fabric before you stitch keeps your seam from being unruly.
https://www.youtube.com/watch?v=cpSZ...&feature=share