Handy man's workshop and laboratory . the desired effect. If the board is bent edgewise, so thatmuch force is required, probably he will start the nail in the upperedge, pointing very sharply downward. Again, two nails drivenin a board at different angles will hold it in place much morefirmly than the same nails would if they were driven in at rightangles with the face of the board. 84 HANDY MAN S WORKSHOP AND LABORATORY Did you ever notice that, in driving a nail in very hard wood,one man will do it successfully, while another succeeds only indoubling the nail up before the point has fairly e
Handy man's workshop and laboratory . the desired effect. If the board is bent edgewise, so thatmuch force is required, probably he will start the nail in the upperedge, pointing very sharply downward. Again, two nails drivenin a board at different angles will hold it in place much morefirmly than the same nails would if they were driven in at rightangles with the face of the board. 84 HANDY MAN S WORKSHOP AND LABORATORY Did you ever notice that, in driving a nail in very hard wood,one man will do it successfully, while another succeeds only indoubling the nail up before the point has fairly entered the wood ?The difference lies in the fact that the expert strikes the nailfairly, and not too hard, coaxing it in; while the other strikestoo hard and with indirection. It may be mentioned, right here,that in driving a nail into very hard wood, it is usually profitableto dip the end into oil or grease. This will not sensibly inter-fere with the holding qualities of the nail, while it will verymaterially facilitate its Fig. 96—Methods of clinching a nail In order that a nail may hold its best, it is necessary that thepieces it penetrates should be in close contact. A few well-judgedtaps of the hammer at the finish will serve to bring about thiscontact; while a heavy, ill-judged blow often destroys it, onaccount of the rebound. So, too, the direction in which a nail goes is governed, notmerely by the direction in which it is started, but very largelyby the shape of the point. You have doubtless noticed how ahorseshoe nail, by having a chisel point, is made to swerve and HANDY MAN S WORKSHOP AND LABORATORY 85 to come out of the hoof but little above the shoe. By filing thepoint of a nail off on one side, it may readily be made to takea curved course in driving, or the same result may be attained bybending the point slightly with the claws of the hammer. Thephotograph, Fig. 95, shows how two boards may be secured, edgeto edge, by nails bent in this way. In drivin
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