Thanks for your great books. They have been an inspiration ever since I found my first copy of Shelter when it first came out. I glance at your blog now and then and noticed the recent post about curved rafters. That is a nice looking barn roof. I thought you might enjoy seeing how we make curved boards and rafters. See the diagram and photos below.
With this method of making curved boards, you can get a rise of around 4/5 of the board width with a single curved cut and no waste.
I am also including links to some Flickr pages with photos of our place which you may enjoy.
Photos of our place:
Timber Jig used to cut mortises and tenons on timbers and logs: