MISCELLANEOUS TOOLS AND METHODS OF WORK 3838 
it has become even with the surface, as this produces a 
depression and ruins any fine surface. 
If it is desirable to sink the nail head below the surface, 
a nail punch, or set, is used. This is always necessary 
when the surface is to be planed after the nailing. 
19. The Mallet. The mallet might be described as a 
hammer with a wooden head, and is used whenever we 
wish to deliver a blow which shall be 
less concentrated than that of the 
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Fie. 45. The Mallet 
/ hammer. It is used in certain kinds 
of heavy chiseling, such as house 
framing, and gives a blow which does not shatter the 
tool handle as a hammer would. 
The use of the mallet is well illustrated by the mak- 
ing of a mortise-and-tenon joint, the chisel and mallet 
being used to cut the opening known as the mortise, as 
shown in Fig. 46. 
20. Screw-Driver. The screw-driver is perhaps the 
most common of household tools, and is probably abused 
more than any other. The handle is usually flattened 
so that the hand may grip it more tightly, but occasion- 
ally a round or fluted handle is seen. 
