Spent about three hours and a lot of hard labor this morning putting together the first of the four walls for the treehouse. It was drizzling slightly, so I dragged all the wood into the garage and assembled the pieces together on the garage floor. Here is the first section completed..

Then, I cut the top angled pieces, and chopped off each of the vertical studs at the right place. I screwed and nailed the top angled pieces to the cut studs, and applied the next piece of plywood. I marked and cut the plywood for the window and the roof line and put them all together. My wife and I hauled the hundred pound wall out to the yard and propped it up under the treehouse.

Now, I just need to figure out how to get that enormous wall (and three others) up to the platform...