murphy4trees
TreeHouser
Per Jerry B's suggestion that there is no finer subject " in the trade to spark insights and opinion"
A careful study of this video gives some insight into the mechanics of the hinge wood when there is some height left to the fibers at the front of the hinge. I accomplish this by using the plate cut. Fundamentals mentions the block out face. I have seen tremendous advantage in greater holding ability of the hinge from the plate cut. If you look carefully at this video you can see the hinge fibers at the near corner of the face crush or fold a little early in the fall. It seems to me that having a little height to the hinge fibers allows the fibers in the front of the hinge some room to move. When the front of the hinge is allowd to sink or crush a little, it seems like that would spread the forces more evenly across the entire width of the hinge rather than concentrating the forces on the rear fibers and then just concertrating the forces on the rearmost fibers as the hinge tears. Much in the same way that the forces on a tight bend of rope will be concentrated on the outside of the bend.
<iframe width="560" height="315" src="https://www.youtube.com/embed/TtDWS9pFrVo" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
A careful study of this video gives some insight into the mechanics of the hinge wood when there is some height left to the fibers at the front of the hinge. I accomplish this by using the plate cut. Fundamentals mentions the block out face. I have seen tremendous advantage in greater holding ability of the hinge from the plate cut. If you look carefully at this video you can see the hinge fibers at the near corner of the face crush or fold a little early in the fall. It seems to me that having a little height to the hinge fibers allows the fibers in the front of the hinge some room to move. When the front of the hinge is allowd to sink or crush a little, it seems like that would spread the forces more evenly across the entire width of the hinge rather than concentrating the forces on the rear fibers and then just concertrating the forces on the rearmost fibers as the hinge tears. Much in the same way that the forces on a tight bend of rope will be concentrated on the outside of the bend.
<iframe width="560" height="315" src="https://www.youtube.com/embed/TtDWS9pFrVo" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>