When I took the tour of the Martin Guitar factory in Nazareth, PA (that's near Bethlehem, PA, oddly enough!), I watched a factory worker stringing a new guitar. I wish I'd timed him, but he certainly took less than one minute per string (including some stretching). Honest!

'Course, he gets a lot of practice at it. It was quite an impressive performance, anyway!

Me, I take a good twenty minutes to a half-hour, while removing my glasses so I can thread the string through the hole, replacing the glasses to find the next string, pricking my fingers, blotting the blood, etc., etc.