Originally Posted by feline fanatic
There is probably a pattern for PPing it somewhere out there. Additionally, I believe it can be made using Pam Bono's technique of sewing two rectangles together corner to corner diagonally but I have never tried experimenting with it. Doing it this way you would end up with a center seam in the large equlateral triangle. Another option would be making them kind of like I make FG units by sewing a square to either side of a rectangle on the diagonal only instead of a square for the 54 40 or Fight it would be a rectangle. Hmmm, makes me want to experiment some.
It could be done simple enough, similar to a snowball. Start out with the square the size you want it. Mark on the centre point at bottom and draw lines to the top for the V. Then lay on a piece of fabric. Stitch. Do other side.
Trim the added pieces using the original block as your template. Then trim off the excess of the original block.
Nice pattern ... and joins our two histories together!