I’ve been thinking more about the one seam flying geese and I believe I have the math figured out. In their example they used 3 inch squares and a 3 x 5.5 square for the folded geese. I believe the formula is this:
- Calculate the finished size of the finished flying geese you want (this example 2.5 high x 5 wide) Remember flying geese are always a 2:1 ratio–twice as wide as they are high. Finished means finished block size in the quilt.
- Add 1/2 inch seam allowance. The size you will make in this example is 3 high x 5.5 wide
- Cut the squares using the unfinished height measurement. In this example 3 inches
- Cut the “geese” using the unfinished block measurement. In this example is 3 high x 5.5 wide
So for example, you want a 2 x 4 flying geese, you would cut 2 – 2 inch squares of the background, and a 2 x 4 rectangle for the “geese”. ***Please see the comments for a discussion of finished vs. unfinished.
Of course, my favorite way to do flying geese is to sew a square over the corners and flip them. Wastes some material, but if you draw a line on the back of the squares, it is pretty accurate.