One of the first jobs on any new frame is to shape the jowl posts.
This is where the top of the main posts are flared at the point of intersection with the wallplate and the tie beam to the create the “English Tying Joint”, an ingenious medieval joint that holds the truss onto the main frame and stops the posts bending outwards under roof loads. All a little bit technical I know but the point is to use the natural curved grain of the timber which forms at the bottom of the growing tree and to stand the post on it’s head.
We used to cut the jowl with a chainsaw but now use a snazzy portable bandsaw, following the grain for maximum strength, creating a wonderful distinctive sweep.
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