I love making half-square triangles. I use Fons and Porter's 1/2sqtriangle ruler. Ruler - corner to corner, draw two lines, put a pin on either side of the line, sew on the lines, cut thread, cut dow the middle, iron to the dark and VOILA!!!! half-square triangle! F&P sells the rulers in two sizes per package. I gave my long one to a quilting neighbor and I use the littler one all the time. It is 8" long. It is the best quilting tool there is, except for an orange stick for pushing seams down. Edie