HI THIS A VERY INTERESTING BLOCK.SO I HAD TO TRY IT. GREAT BLOCK.BUT I'M A CONTROL FREEK. SO I TOOK 2 MATCHING DARK SQUARES AND 2 MATCHING LIGHT SQUARES AND SEWED THEM BY DRAWING A LINE FROM CORNER TO CORNER AND STICHING ON BOTH SIDES OF THE MARK AND CUT APART TO MAKE 4 HALF SQUARE TRIANGLES AND THEN SEWED THESE TOGETHER TO MAKE MY SQUARE.THIS WAY ALL MY PINWHEELS IN ALL MY BLOCKS GO THE SAME WAY.