Reviewing Jack Sobon’s article on bladed scarf joints he writes: “The barefaced tenons prevent twisting and improve bending and tensile strength. Some builders added extra pins in the central lapped portion. Overall length is commonly four times the depth of the timber. Variations of this scarf may present sub tenons without pins or a shortened lapped portions. In one variation, the topmost and bottommost cuts are aligned vertically and the tenons lengthened. (See Cummings. fig 86 and Hewitt. fig 271) Tenons are typically 1 1/2 in. or 2 in. thick, and 4 in. or 6 in. long. Good luck, Jim

[This message has been edited by J Rogers (edited 08-21-2001).]

[This message has been edited by J Rogers (edited 08-21-2001).]