Now speed piece the half squares, by
stacking a Color 4 3-7/8" x 7-3/4" with a color 2
strip of the same size, right sides together. On the back of the top
strip lightly mark the 3-7/8" line, and then mark the diagonals
as shown at left. Now sew a SCANT 1/4" above and below the
marked diagonals, pivoting at the square line. Cut apart on the
square line, and on the diagonal lines...