CUTTING TOOLS 15 
be used without exerting much pressure, in accordance 
with the general rule that we do our best work with 
tools when we work easily and deliberately 
il 
[ees 
Fie. 16. The Backsaw 
l| 
a / 
Many varieties of saws are designed for special pur- 
poses, including those which cut stone and metal. 
6. Backsaw. 
The backsaw is a 
crosscut saw with 
small teeth, and 
has a heavy. steel 
backpiece, Fig. 
17, to prevent 
bending. In this 
respect it differs 
from the ordinary 
Fic. 17. Method of using the Backsaw and 
Bench Hook 
crosscut varie- 
ties, which bend 
readily. The purpose of the backsaw is to make fine, 
straight cuts in delicate, accurate work. The steel 
