Fig. 126.
Common wire nails are thick and have large flat heads. They are used in rough work where strength is desired. [Fig. 126] A. Finishing nails, Fig. 126 B, are used for fine work such as inside woodwork, cabinet work, etc. Casing nails, Fig. 126 C, are somewhat thicker and stronger than finishing nails; they have small heads.
67. Nailing.
—Especial care is necessary in starting cut nails. [Fig. 127] shows two views of a cut nail. From these it will be seen that the sides of the nail form a wedge in one of the views while in the other they are parallel. The nail should be so started that the wedging action shall take place along, not across the grain.
Fig. 127.
Fig. 128.
In nailing through one piece into the edge of another, assume a position so that you can look along the piece into the edge of which you are nailing. [Fig. 128]. If the nail is to be driven plumb, it must be sighted from two directions several times in the beginning of the nailing. Having driven the points of the nails slightly below the surface of the first piece, adjust the two pieces properly, force the points into the second piece, and, holding the parts firmly with the left hand, drive the nails into place.