We started with three book-matched pairs of curved timber. The smallest pair used for the tie beam. We hewed some of the work, and used a chainsaw with a base plate to saw some. I will try to remember to ask about the post running to the sill, and not being mortised into the cruck. There is no room in the sill for 4" cruck or post tenons, as there is a mortise underneath them for the end sill.
