Cutting and sewing HST always were iffy for me. I never got them all the same. I have the Wondercut ruler, the June Taylor HST ruler, a speciality ruler that only measures 7/8" and the Tiger Tape, the Straight Stitch tape, and using the 1/2" divided ruler and using Thangles. Thangles are the fastest most accurate way to make a lot of HSTs. I now only make HSTs that are the size of my Go dies for them.