Thank you for a quick response. I will draw out the block pattern on graph paper as well as stitch a test block. I have played with calculations some, and if I understood the formula correctly, I should simply take the cutting size iof each component n the pattern, multiply it by 1.333, and add .5". For example, the 2.5" strips become 2.5x1.333=3.8 +.5=4.3, and 18.5 x 1.333=24.66+.5=25.16. The unfinished rectangle is then 25.16 x 4.3. The block itself is a square center surrounded by an 8 point star and echoed by a larger 8 point star, similar to a sawtooth star.