Originally Posted by
Jan in VA
Yes, it's simple. The diagonal of a 10" square is about 14" so the outside edges of the HSTs would be more than 6". BUT the reason I do not recommend this method for HSTs is because the resulting HSTs have bias edges along their outside edges, yuck!
Try cutting your basic squares at 10" -- or maybe even 10.5" -- draw a diagonal line in each direction and in half thru the middle both directions.
Sew 1/4" away from those two diagonal lines, on each side of them. Then cut on the drawn lines. Press and trim.
Jan in VA
Jan, I suppose by now you have realized that those vertical and horizontal lines need to be cut or you won't be able to open anything. That produces 8 HSTs as techsewer said. Now all we need to know is how big to cut the first two squares to make our HTSs big enough. And how big would our HTSs be if we used 10 inch squares. I say they will be about 4.5 finished.
To make a 6.5 finished HTS, you need squares at least 14 inches. Am I correct?