This is awesome, and am so tempted to try.... one question, how long did it take to physically complete this! Also I know you had to "repair" the string a few times, but is this a 2mi single thread?
Similarly, assuming the average loop took me 10 seconds to do, that amounts to about 10 hours, and I do remember that the final step only took a day or 4, with a few hours of work every evening.