We used a different method to make our half square triangles for the Scrapaholic blocks. We had two strips of fabric that were cut on the bias and stitched on either side of the long bias sided then cut our half square triangle units. Here is a good tutorial on how the triangle square units were made using this method. Our bias strips were long enough to cut 5 units from each pair of strips and we cut them 2 1/4" wide.
I really liked this method as the units are cut before they are pressed open. With the traditional method you have to square up the units and a lot of times have to turn and cut both sides. Try it - it might work in some of your quilts too.