66, and starting in the grooves thus made, saw with the back-saw to the gaged lines on both edges.

The waste may now be taken out either with a chisel or with a router, Fig.

122, p.83.The second member, Y, should just fit into a dado thus made, but if the joint is too tight, the cheeks of the dado may be pared with a chisel.

In delicate work it is often wise not to saw at all, but to use only the knife and chisel.
_No.26.A dado and rabbet_, Fig.

266, is made by cutting a dado in one member, X, and a rabbet on the other, Y, in such a way that the projecting parts of both members will fit tight in the returns of the other member.