I just did a quilt out of a magazine and it gave the exact dimensions to cut the half square triangles then it went on to say if you wanted to do it an easier way, you could cut squares a certain size sew together, cut apart and then trim down to correct size. fortunately, I am familiar with this process. If I had to cut HST without doing the square method, I wouldn't do the quilt. That darn bias will have me pulling my hair out!