Originally Posted by Lost_Biker
The thing I came across once I started was that it's not an exact science, but close enough. I also didn't initially trust the calculator and measured things over and over when I should have just started sewing the silly thing. I wasted probably 4 hours out of the 16 it took to sew on worrying about the calculations. Don't worry - Be sewing!
Nothing wrong with that! It's better to trust yourself than some yahoo on the Internet.
Your quilt looks great!