I will have to say that cutting the joint by hand with no power tools was a lot easier than I thought. Much to my surprise! The 2" hand auger did a nice job on the four holes (about 5 minutes each).
Compare that to making the same joint with modern day power tools.
Although the power tools got the job done in 1/3 of the time (15 minutes) the hand tool experience has given me a lot to think about. How the actual builders of the original barn worked and spent their day making joint after joint with only chisels, hammer and handsaw.
Actually by using power tools I will have about 30 minutes after each joint to just "think"! What do you think?