Nails used by woodworkers differ in shape or style according to their peculiar use. The most common type is the wire nail, Fig. 98. The cut nail, Fig. 99, is often used for fastening shingles as it does not rust as quickly as the wire nail. These nails are each classed as common, finishing, and casing nails, Figs. 98 and 99. Nails are sold by the pound and are roughly classified as to size by the term penny, as 3 penny, 6 penny, etc. A more accurate specification is one which indicates the gage of the wire as indicated upon a wire gage, Fig. 100, and the length of the nail in inches; thus, 1 1/2" No. 17 finishing nail. In determining the gage of a nail, it should be noted that the reading is obtained by fitting the slot of the wire gage, and not the hole to the body of the nail. The number at the slot which comes nearest fitting is the one which indicates the gage of the nail.

Fig. 98. Wire Nails

Fig. 98. Wire Nails.

Fig. 99. Cut Nails

Fig. 99. Cut Nails.

Fig. 100. Wire Gage

Fig. 100. Wire Gage.

Fig. 101. Nailing

Fig. 101. Nailing.

In nailing through one piece into the edge of another piece, the worker should stand so that he may. sight along the second piece into which he is nailing, Fig. 101. It is customary to start one of the nails in the first piece so that its point just projects slightly through the reverse side, the board being placed upon a scrap block that the nail point may not injure the bench top. After this the first member is placed upon the second member as in Fig. 101 and the nail driven in.

In nailing on box bottoms, care must be taken to so place the nails that they shall not strike nails previously driven through the sides into the ends or partitions of the box. Should a nail not take the desired direction, noth-. ing is gained by striking it sidewise with the hammer in an effort to change its direction. This but serves to aggravate the difficulty by bending the nail in such a manner that it will "come out" sooner than it otherwise would have done. Withdraw the nail and start it in a new location.

Fig. 102. Withdrawing Nails

Fig. 102. Withdrawing Nails.

In withdrawing a nail, place a block of scrap wood under the head of the hammer to prevent its marring the wood, Fig. 102. If the nail is long, use several blocks of different thicknesses as the nail is withdrawn.