This is Method #3 in my tutorials on how to make Half Square Triangles.  The first method makes 2 at a time, the second  method makes 4 at a time and this method makes 8 at a time.  It is for sure the fastest way to make HSTs.  And it’s super easy – 2 squares of fabrics, sew 4 seams, make 4 cuts and trim.  You can really crank them out with this method.  And there are no bias edges on these blocks.

You begin with cutting two squares of fabric the same size.  I cut them generously because I like to trim my finished HST to size, so they are perfect.  Here is a chart to give you the sizes.  I have included a cutting size you can use if you don’t want to cut them oversize.