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Any other ways
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Wood with a vertical load is in compression, and a joint that has shoulders like a lap or a finger joint will be best, since strength is not relying entirely on the glue bond.+1 on scarf joints, much depends on the application, if there is side load or not
................Wood with a vertical load is in compression, and a joint that has shoulders like a lap or a finger joint will be best, since strength is not relying entirely on the glue bond.
A member that is under shear, or side loading, is more difficult to make secure, but again, a long lap joint or finger joint will be best since the long grain glue bond is stronger in shear. I disagree, a half lap has only half board thickness in 2 places, and makes a weaker member for side load. we'll just agree to disagree.
End grain to end grain joinery has very little strength, if any and that would be from the glue alone, not from the wood structure. So minimize the end grain condition and increase the long grain area for a stronger joint.
There are 2 ways to orient a half lap under a side load.A member that is under shear, or side loading, is more difficult to make secure, but again, a long lap joint or finger joint will be best since the long grain glue bond is stronger in shear.
I disagree, a half lap has only half board thickness in 2 places, and makes a weaker member for side load. we'll just agree to disagree.
I don't know who to agree or disagree with. IMO, a true half lap is not half a board thickness in two places, constituting its integrity. When the two halves are glued and clamped, that joint is more robust than a single piece of wood. It's the same principle as glued up laminations. The glue joint makes those two parts stronger than if it was just one.I would agree in the first case that there is only a half board thickness to resist the load, but in the second case, there is sufficient long rain surface to be as strong as the board itself. Agreed? :blink: