Scarf joint
Two beams spliced end-to-end along a long diagonal, pegged home.
When a tie is longer than the tree, you scarf it — two beams joined end-to-end along a long diagonal so the splice has more glued-and-pegged surface than a butt joint could ever offer.
How to cut it
slope 1:8 or longer — the flatter, the stronger faces plane both mating faces dead flat keys wedge keys or pegs to keep it from sliding stagger never align a scarf over a post
Where it lives
Long tie beams, plates, and sills in frames wider than any single log will reach.