[Fig. 215] is a variation of [Fig. 214], and it will be noticed that tenons are provided on the face and underside to resist cross strain. Probably this is one of the best varieties of the scarfed joint. Unfortunately, however, its production is somewhat costly, and this may be the reason that it is not more universally used. Folding wedges are used to secure the two pieces in position.
Fig. 214.—Tenoned Scarf Joint.
Fig. 215.—Double Tenoned Scarf Joint.
Fig. 216.—Scarf Joint with Vee'd ends.